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- 1. Multiple ChoiceThe rate at which distance is covered is called speed.TrueFalse
- 2. Multiple ChoiceAverage speed is defined as the time it takes for a trip divided by the distance.TrueFalse
- 3. Multiple ChoiceVelocity is different from speed in that velocity is speed in a given direction.TrueFalse
- 4. Multiple ChoiceA unit of velocity is the meter.TrueFalse
- 5. Multiple ChoiceThe rate at which velocity changes with time is called acceleration.TrueFalse
- 6. Multiple ChoiceA unit of acceleration is meters per second.TrueFalse
- 7. Multiple ChoiceWhen a car rounds a corner at a constant speed, its acceleration is zero.truefalse
- 8. Multiple ChoiceEven though a car is slowing down, it is still accelerating, in the most general definition of acceleration.TrueFalse
- 9. Multiple ChoiceA ball is thrown into the air. At the highest point, the ball has zero velocity and zero acceleration.TrueFalse
- 10. Multiple ChoiceAs a ball falls freely, the distance it falls each second is the same.TrueFalse
- 11. Multiple ChoiceUnless stated otherwise, when we discuss the speeds of things, we mean with respect to the center of the universe.TrueFalse
- 12. Multiple ChoiceWhen we discuss the motion of something, its motion is described relative to something else.TrueFalse
- 13. Multiple ChoiceSpeed isA measure of how fast something is movingalways measured in terms of a unit of distance divided by a unit of timethe distance covered per unit timeall of the above
- 14. Multiple ChoiceOne possible unit of speed ismiles per hourlight years per centurykilometers per hourall of the above
- 15. Multiple ChoiceAcceleration is defined as the CHANGE intime it takes to move from one place to another place.velocity of an objectdistance divided by the time intervalvelocity divided by the time interval
- 16. Multiple ChoiceSuppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. Which of the following is NOT true?You and the car are accelerating.Your acceleration is constantly changing.Your velocity is constant.Your speed is constant.
- 17. Multiple Choice
A train travels 6 meters in the first second of travel, 6 meters again during the second second of travel, 6 meters again during the third second. It's acceleration is __ m/s2?
0
6
12
18
- 18. Multiple ChoiceA car starts from rest and after 7 seconds it is moving at 42 m/s. What is the ’s average acceleration?0.171.6767
- 19. Multiple ChoiceAs an object falls freely in a vacuum, itsvelocity increasesacceleration increasesboth a and bnone of the above
- 20. Multiple ChoiceIn the absence of air resistance, objects fall at constantspeedvelocityaccelerationall of the above
- 21. Multiple ChoiceA ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would beless than the speed it had when thrown upwards.more than the speed it had when thrown upwards.the same as the speed it had when thrown upwards.
- 22. Multiple ChoiceSuppose an object is in free fall. Each second the object fallsthe same distance as in the second before.a larger distance than in the second before.with the same instantaneous speed.with the same average speed.
- 23. Multiple ChoiceIf you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?the featherneitherthe coin
- 24. Multiple ChoiceConsider drops of water leaking from a water faucet. As the drops fall theyremain at a relatively fixed distance from each otherget farther apartget closer together
- 25. Multiple ChoiceIf a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second byabout 5m/sabout 10m/sabout 15m/sa variable amount
- 26. Multiple ChoiceAn object accelerates at 2 m/s^2. Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16 m/s?4 s8 s16 s1/16 s
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