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2. A description of how far it is from one point to another.

3. Distance

4. If gravity acts to pull an object down a hill, this acts to push it up.

5. Friction

6. The resistance to the change in motion by an object.

7. Inertia

8. A measure of the pulling force of gravity.

9. Weight

10. The SI unit for distance.

11. Meter

12. F = m x a This is:

13. Newton’s Second Law of Motion

14. Also known as The Law of Inertia

15. Newton’s First Law of Motion

16. kg. m/s/s

17. A Newton (N)

18. The rate of change in velocity

19. acceleration

20. Acceleration due to gravity on the surface of the Earth

21. 9.8 m/s/s or m/s 2

22. What is the weight of an object with a mass of 1 kilogram?

23. F = ? m = 1 kg a = 9.8 m/s/s F = m x a F = (1 kg)(9.8 m/s/s) F = 9.8 N

24. Acceleration, deceleration and a change in direction all can be caused when the net force is greater than ___

25. zero newtons (0 N)

26. As a box is sliding down a ramp, a 10 newton force of gravity is pulling the box down while a 2 newton force of friction acts to stop the box. What is the net force accelerating the box down the ramp?

27. 10 N – 2 N = 8 N

28. A tow truck pulls a 2000 kg with a net force of 4000 N. What is the acceleration of the car?

29. a = F ÷ m m = 2000 kg F = 4000 N 4000 N ÷ 2000 kg a = 2 m/s/s or m/s 2

30. Jumping on a trampoline is an example.

31. Newton’s Third Law of Motion

32. A pencil sitting on a desk (not moving) is an example.

33. Newton’s 1st Law

34. The SI unit of Force

35. The Newton

36. Determines how much inertia an object has

37. The mass of the object.

38. A person flies through the windshield of the car because she did not have their seatbelt on. This is an example of

39. Newton’s First Law of Motion

40. What is the SI unit of Mass?

41. kilograms

42. If you go to the moon, what happens to your mass

43. It does not change.

44. The amount of matter in an object

45. Mass

46. If you drop a penny, an elephant, and a puppy at the same time from the same height, which would hit the ground first (ignoring air resistance)?

47. They would all hit at the same time.

48. Two factors in determining the amount of gravity between two objects.

49. The mass and the distance between the two objects

50. This is what happens to your weight and mass when you go to the moon.

51. Weight decreases, mass remains the same.