questionID stringlengths 10 10 | question_text stringlengths 5 342 | answer_choices stringlengths 17 546 | correct_answer stringclasses 7
values | context stringclasses 664
values |
|---|---|---|---|---|
NDQ_012975 | Which units would most likely be used to measure the distance between two cities? | a. millimeters, b. centimeters, c. meters, d. kilometers | d | Lesson: distance and direction
Frame of Reference:
Assume that a school bus, like the one in Figure 12.2, passes by as you stand on the sidewalk. Its obvious to you that the bus is moving. It is moving relative to you and the trees across the street. But what about to the children inside the bus? They arent moving rel... |
NDQ_012976 | To find the distance of a route that changes direction, you must | a. consider only the distance traveled in the first direction, b. calculate the average distance traveled in one direction, c. add up all the distances traveled in different directions, d. subtract the starting distance from the ending distance | c | Lesson: distance and direction
Frame of Reference:
Assume that a school bus, like the one in Figure 12.2, passes by as you stand on the sidewalk. Its obvious to you that the bus is moving. It is moving relative to you and the trees across the street. But what about to the children inside the bus? They arent moving rel... |
NDQ_012977 | When both distance and direction are considered, motion | a. is always measured in meters, b. cannot be calculated, c. is a force of nature, d. is a vector | d | Lesson: distance and direction
Frame of Reference:
Assume that a school bus, like the one in Figure 12.2, passes by as you stand on the sidewalk. Its obvious to you that the bus is moving. It is moving relative to you and the trees across the street. But what about to the children inside the bus? They arent moving rel... |
NDQ_012978 | To determine the distance between two points on a map, you can use a ruler and | a. a compass, b. the compass rose, c. a sheet of graph paper, d. the scale in the map key | d | Lesson: distance and direction
Frame of Reference:
Assume that a school bus, like the one in Figure 12.2, passes by as you stand on the sidewalk. Its obvious to you that the bus is moving. It is moving relative to you and the trees across the street. But what about to the children inside the bus? They arent moving rel... |
NDQ_012979 | To explain how to get from point A to point B, you must describe both the distance and the | a. speed, b. length, c. mileage, d. direction | d | Lesson: distance and direction
Frame of Reference:
Assume that a school bus, like the one in Figure 12.2, passes by as you stand on the sidewalk. Its obvious to you that the bus is moving. It is moving relative to you and the trees across the street. But what about to the children inside the bus? They arent moving rel... |
NDQ_012987 | When calculating average speed, the symbol d represents the | a. change in distance, b. change in direction, c. instantaneous distance, d. division of distance by time | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012988 | Speed depends on how far something travels and | a. how steep its route is, b. which direction it travels, c. how much time it takes to travel that far, d. none of the above | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012989 | If you run a 100-meter race in 20 seconds, what is your average speed during the race? | a. 20 m/s, b. 10 m/s, c. 5 m/s, d. 2 m/s | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012990 | What is the SI unit for speed? | a. s, b. m, c. m/s, d. s/m | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012991 | Tony ran at a constant speed of 10 m/s for a total of 60 seconds. How far did he run? | a. 6m, b. 60 m, c. 600 m, d. 6000 m | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012992 | If the slope of a distance-time graph is steep, then the speed of the object must be | a. slow, b. rapid, c. constant, d. changing | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012993 | If you travel 500 kilometers in 5 hours, your average speed is | a. 5 km/h, b. 50 km/h, c. 100 km/h, d. 250 km/h | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012994 | If you use an arrow to represent velocity, what does the length of the arrow represent? | a. time, b. speed, c. distance, d. direction | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012995 | Which choice(s) could represent the velocity of a moving car? | a. 80 mi/h, b. 40 km/h, c. 50 km/h north, d. all of the above | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012996 | Objects moving at the same velocity have the same | a. size, b. speed, c. direction, d. two of the above | d | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012998 | Which quantity is a vector? | a. speed, b. velocity, c. direction, d. distance | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_012999 | If speed is constant, velocity | a. must be zero, b. must be constant, c. can be changing, d. none of the above | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013007 | Both speed and velocity are vectors. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013009 | The symbol t represents a change in time. | a. true, b. false | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013012 | The length of a velocity arrow represents distance. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013014 | A straight line on a distance-time graph means that speed is zero. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013015 | Speed is negative when an object moves backward. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013016 | Speed depends on both distance and direction. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013017 | It is easier to calculate average speed than instantaneous speed. | a. true, b. false | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013018 | The slope of a distance-time graph represents the direction of motion. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013019 | Velocity is the scientific term for speed. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013020 | Speed can only be greater than or equal to zero. | a. true, b. false | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013021 | Objects moving at the same speed always have the same velocity. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013022 | Average speed can be calculated from a distance-time graph. | a. true, b. false | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013023 | Speed equals distance multiplied by time. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013024 | A change in speed can occur without a change in velocity. | a. true, b. false | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013025 | A change in velocity can occur without a change in speed. | a. true, b. false | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013026 | measure of both speed and direction | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | b | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013027 | distance speed | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | g | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013028 | speed of a moving object at a given moment | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | c | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013029 | speed time | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | f | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013030 | general term for how quickly or slowly something moves | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | a | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013031 | total distance traveled divided by the time it took to travel that distance | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | d | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013032 | steepness of a graph line | a. speed, b. velocity, c. instantaneous speed, d. average speed, e. slope, f. distance, g. time | e | Lesson: speed and velocity
Speed:
Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula: speed = distance time A familiar example is the speed of a... |
NDQ_013033 | Acceleration occurs whenever an object | a. moves, b. changes position, c. changes direction, d. two of the above | c | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013034 | speed plus direction of motion | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | f | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013035 | negative acceleration | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | c | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013036 | Which of the following is an example of acceleration? | a. a top spinning at a constant speed, b. a car slowing down through an intersection, c. a train going a steady 80 km/h along a straight track, d. two of the above | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013037 | What is the acceleration of a bicycle that goes from 3 m/s to 1 m/s in 2 seconds? | a. 0.5 m/s2, b. 1.0 m/s2, c. 1.5 m/s2, d. -1.0 m/s2 | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013038 | SI unit for acceleration | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | g | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013039 | symbol for a change in velocity | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | e | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013040 | If the line of a velocity-time graph slopes upward, then acceleration must be | a. zero, b. positive, c. negative, d. changing | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013041 | measure of a change in velocity | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013042 | The x-axis of a velocity-time graph represents | a. speed, b. velocity, c. direction, d. none of the above | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013044 | symbol for a change in time | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013046 | how quickly an object changes position | a. acceleration, b. t, c. deceleration, d. speed, e. v, f. velocity, g. m/s2 | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013054 | Acceleration is a vector. | a. true, b. false | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013055 | Acceleration shows how quickly velocity changes. | a. true, b. false | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013057 | A change in direction without a change in speed is not acceleration. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013060 | A velocity-time graph shows how velocity changes over time. | a. true, b. false | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013061 | Acceleration is always greater than or equal to zero. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013062 | Acceleration occurs only when there is a change in speed. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013063 | It is easier to calculate acceleration when both speed and direction are changing. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013064 | The y-axis of a velocity-time graph represents distance traveled. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013065 | If a velocity-time graph slopes downward to the right, then acceleration is negative. | a. true, b. false | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013066 | If velocity is not changing, then acceleration is zero. | a. true, b. false | a | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013067 | A change in direction with or without a change in speed is velocity. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013068 | If the slope of a velocity-time graph is a straight line, then velocity must be constant. | a. true, b. false | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013069 | Acceleration shows | a. how quickly an object travels, b. the direction in which an object moves, c. how far an object travels in a given time, d. how quickly an objects velocity changes | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013070 | Which of the following is an example of acceleration? | a. a change in direction, b. an increase in speed, c. a decrease in speed, d. all of the above | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013071 | If you are riding in a car that decelerates suddenly, you will feel your body | a. pressed backward, b. pushed to the side, c. thrust forward, d. none of the above | c | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013072 | To calculate acceleration without a change in direction, you should use the formula | a. acceleration = v + t, b. acceleration = t/v, c. acceleration = v/t, d. acceleration = v t | c | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013073 | When Sara ran a race on a straight track, her speed changed from 3 m/s to 6 m/s over a time period of 3 seconds. What was her acceleration during that time? | a. 3 m/s2, b. 1 m/s2, c. 2 m/s2, d. none of the above | b | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013074 | What does a velocity-time graph represent? | a. how velocity changes over time, b. how distance changes over time, c. acceleration, d. two of the above | d | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013075 | If speed decreases, then acceleration is | a. zero, b. positive, c. negative, d. between 0 and 1 | c | Lesson: acceleration
Defining Acceleration:
Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector. People ... |
NDQ_013076 | Force can cause a | a. stationary object to start moving, b. moving object to change speed, c. moving object to change direction, d. all of the above | d | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013077 | Examples of forces include | a. motion, b. friction, c. acceleration, d. two of the above | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013078 | If gravity pulls you down toward the center of Earth with a force of 500 N, how much upward force does the ground exert on you? | a. 0N, b. 50 N, c. 500 N, d. none of the above | c | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013079 | In the following sketch, what is the net force acting on the box? | a. 5 N to the right, b. 5 N to the left, c. 15 N to the right, d. 15 N to the left | c | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013080 | Which diagram represents balanced forces? | a. a, b. b, c. c, d. d | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013081 | Which pair of forces in question 5 differ from each other in both strength and direction? | a. a, b. b, c. c, d. d | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013082 | Mass is a measure of the force of gravity on an object. | a. true, b. false | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013083 | Most objects have at least two forces acting on them at all times. | a. true, b. false | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013084 | If opposing forces are unequal in strength, the net force is less than zero. | a. true, b. false | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013085 | The SI unit for weight is the newton. | a. true, b. false | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013086 | When two forces act on an object in the same direction, the net force equals zero. | a. true, b. false | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013087 | When forces act in opposite directions on an object, they are subtracted to yield the net force. | a. true, b. false | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013088 | Every sport involves forces. | a. true, b. false | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013089 | Forces are always balanced when they act on an object in the same direction. | a. true, b. false | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013090 | Whenever an object is stationary, it has no forces acting on it. | a. true, b. false | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013091 | Two forces acting in the same direction always result in a stronger force. | a. true, b. false | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013099 | combination of all the forces acting on an object | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | c | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013100 | force that a person or thing exerts on to an object | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | d | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013101 | push or pull acting on an object | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | a | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013102 | forces that produce a net force of zero | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | g | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013103 | example of a force | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | f | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013104 | SI unit for force | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | e | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013105 | forces that produce a net force greater than zero | a. force, b. unbalanced forces, c. net force, d. applied force, e. newton, f. gravity, g. balanced forces | b | Lesson: what is force
Defining Force:
Force is defined as a push or a pull acting on an object. Examples of forces include friction and gravity. Both are covered in detail later in this chapter. Another example of force is applied force. It occurs when a person or thing applies force to an object, like the girl pushin... |
NDQ_013106 | Friction occurs because | a. all surfaces have some roughness, b. surfaces in contact generate heat, c. chemical reactions take place when surfaces touch, d. none of the above | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013107 | Friction is greater when surfaces are | a. rougher, b. smoother, c. smaller, d. two of the above | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013108 | Which factors affect friction? | a. roughness of the surfaces, b. area of the surfaces, c. force of weight pressing on the surfaces, d. two of the above | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013109 | Rubbing your hands together makes them warmer because | a. friction causes molecules to move faster, b. rubbing causes chemical reactions, c. rubbing causes skin cells to release enzymes, d. none of the above | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013110 | If you pick up and carry a piece of heavy furniture, which type of friction do you have with the floor? | a. static friction, b. lifting friction, c. sliding friction, d. rolling friction | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013111 | Which way of moving a box produces no friction? | a. sliding the box across the floor, b. rolling the box on a dolly, c. picking up the box and carrying it, d. none of the above | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013112 | Why do ball bearings reduce friction in a wheel? | a. Ball bearings prevent the wheel from sliding on the road, b. Rolling friction is less than sliding friction, c. Ball bearings roll instead of slide, d. two of the above | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.