The slope at a point on a position-versus-time graph of an object is

1. The slope at a point on a position-versus-time graph of an object is the object’s speed at that point. the object’s average velocity at that point. the object’s instantaneous velocity at that point. the object’s acceleration at that point. the distance travelled by the object to that point.

2. The slope at a point on a position-versus-time graph of an object is the object’s speed at that point. the object’s average velocity at that point. the object’s instantaneous velocity at that point. the object’s acceleration at that point. the distance travelled by the object to that point.

3. The area under a velocity-versus-time graph of an object is the object’s speed at that point. the object’s acceleration at that point. the distance travelled by the object. the displacement of the object. This topic was not covered in this chapter.

4. The area under a velocity-versus-time graph of an object is the object’s speed at that point. the object’s acceleration at that point. the distance travelled by the object. the displacement of the object. This topic was not covered in this chapter.

5. At the turning point of an object, the instantaneous velocity is zero. the acceleration is zero. both A and B are true. neither A nor B is true. This topic was not covered in this chapter.

6. At the turning point of an object, the instantaneous velocity is zero. the acceleration is zero. both A and B are true. neither A nor B is true. This topic was not covered in this chapter.

7. Important Concepts

8. A 1-pound block and a 100-pound block are placed side by side at the top of a frictionless hill. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance the 1-pound block wins the race. the 100-pound block wins the race. the two blocks end in a tie. there’s not enough information to determine which block wins the race.

9. A 1-pound block and a 100-pound block are placed side by side at the top of a frictionless hill. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance the 1-pound block wins the race. the 100-pound block wins the race. the two blocks end in a tie. there’s not enough information to determine which block wins the race.

10. Applications

11. Applications

12. Which position-versus-time graph represents the motion shown in the motion diagram?

13. Which position-versus-time graph represents the motion shown in the motion diagram?

14. Which velocity-versus-time graph goes with the position-versus-time graph on the left?

15. Which velocity-versus-time graph goes with the position-versus-time graph on the left?

16. Which position-versus-time graph goes with the velocity-versus-time graph at the top? The particle’s position at ti = 0 s is xi = –10 m.

17. Which position-versus-time graph goes with the velocity-versus-time graph at the top? The particle’s position at ti = 0 s is xi = –10 m.

18. Which velocity-versus-time graph or graphs goes with this acceleration-versus-time graph? The particle is initially moving to the right and eventually to the left.

19. Which velocity-versus-time graph or graphs goes with this acceleration-versus-time graph? The particle is initially moving to the right and eventually to the left.

20. Rank in order, from largest to smallest, the accelerations aA–aC at points A – C. aA > aB > aC aA > aC > aB aB > aA > aC aC > aA > aB aC > aB > aA

21. Rank in order, from largest to smallest, the accelerations aA–aC at points A – C. aA > aB > aC aA > aC > aB aB > aA > aC aC > aA > aB aC > aB > aA