1. 1 pt Definitions Impulse P problems P conservation Misc.

2. What is the definition of momentum?

3. 1 PT Inertia in motion/mass X velocity

4. What is the definition of impulse?

5. 2 PT Change in momentum/force X time

6. What is an elastic collision?

7. 3 PT A collision in which the objects do not stick together

8. What is an inelastic collision?

9. 4 PT A collision in which the objects stick together after colliding

10. What is the law of conservation on momentum?

11. 5 PT Momentum cannot be gained or lost only transferred from one object to another

12. Why are padded dashboards used?

13. 1 PT To increase the time of impact and increase the impulse

14. A cannonball is shot from a cannon. Is the impulse the same, smaller or larger on the cannon as on the ball?

15. 2 PT same

16. A bug runs into the windshield of a moving bus. Which one, the bus or bug, has the greater impulse?

17. 3 PT same

18. Superman throws a massive asteriod in space. Which one travels faster – Superman or the asteroid?

19. 4 PT Superman

20. Why are large impulses a good thing?

21. 5 PT They increase the time of impact and decrease the damage done in a collision.

22. A 2 kg ball moving at 5 m/s has ________ kg m/s of momentum.

23. 1 PT 10 kg m/s

24. A 5 kg ball with 20 kg m/s of momentum moves with a speed of _____ m/s.

25. 2 PT 4 m/s

26. A tricycle moves at 3 m/s with 15 kg m/s of momentum. What is the mass of the tricycle?

27. 3 PT 5 kg

28. What is the momentum of a 10 kg object moving at 6 m/s?

29. 4 PT 60 kg m/s

30. How much mass would an object moving at 15 m/s with 45 kg m/s of momentum have?

31. 5 PT 3 kg

32. What is the law of conservation of momentum?

33. 1 PT Momentum cannot be gained or lost – only transferred from one object to another

34. Granny (50 kg) is skating at 4 m/s and picks up her stationary 25 kg grandson. What is their momentum before collision?

35. 2 PT 200 kg m/s

36. Granny (50 kg) is skating at 4 m/s and picks up her stationary 25 kg grandson. What is their momentum after the collision?

37. 3 PT 200 kg m/s

38. Granny (50 kg) is skating at 4 m/s and picks up her stationary 25 kg grandson. What is their speed after the collision?

39. 4 PT 2.7 m/s

40. A 2 kg cart moving at 3 m/s collides with a 1 kg cart moving at 2 m/s in a head- on collision. If they stick together after colliding, what is their speed afterwards?

41. 5 PT 1 m/s

42. What are the units of momentum?

43. 1 PT Kg m/s

44. What is the momentum of a 20 kg child running at 10 m/s?

45. 2 PT 200 kg m/s

46. A 1000 kg car has a momentum of 3500 kg m/s. What is its velocity?

47. 3 PT 3.5 m/s

48. A 1 kg blob of putty thrown at 1 m/s hits a second 1 kg blob of putty at rest. What is their momentum after the collision?

49. 4 PT 1 kg m/s

50. Granny (100 kg) is skating at 10 m/s. She picks up her stationary 25 kg grandchild. What is their speed after Granny picks her up?

51. 5 PT 8 m/s