1. Forces Chapter 10

2. What is an example of exerting force?

3. Pushing/pulling anything

4. What happens when two forces act in the same direction?

5. They add together

6. The force of gravity on a person or object on the surface of a planet is called

7. Friction

8. Which of the following is an example of rolling friction?

9. Anything rolling

10. When the only force acting on a falling object is gravity, then the object is said to be

11. In free fall

12. Air resistance is a type of

13. Friction

14. The law of universal gravitation states that any two objects in the universe, without exception

15. Attract each other

16. In physical science, a push or a pull is called a

17. Force

18. The amount of matter in an object is called its

19. Mass

20. Which of the following is an example of increasing friction intentionally

21. Throwing sand on an icy driveway

22. The force that pulls falling objects toward Earth is called

23. Gravity

24. Objects falling through air experience a type of friction called

25. Air resistance

26. The SI unit for force is the

27. Newton

28. Balanced forces acting on an object

29. Never change the object’s motion

30. The tendency of an object to resist change in its motion is known as

31. Inertia

32. How can you increase the momentum of an object?

33. By increasing mass or velocity

34. According to the law of conservation of momentum, when two objects collide in the absence of friction,

35. Momentum is transferred and not lost

36. The total momentum of a group of objects is conserved unless

37. Outside forces act on the objects

38. According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail

39. Exerts an equal force on the hammer

40. What happens when a unbalanced force acts on an object?

41. The objects in motion will accelerate

42. Which of these objects would exhibit the greatest resistance to a change in it’s motion?

43. Heaviest mass

44. Newton’s second law of motion states the relationship of mass, acceleration, and force. It says that

45. F = Mass x Acceleration

46. As the force applied to the object is increases, the objects will also increase.

47. Acceleration

48. A 300 N force acts on a 20 kg object. The acceleration of the object is

49. 15 meters per second squared

50. Compared to a sports car moving at 30 mph, the same sports car moving at 60 mph has

51. Twice as much momentum

52. One way to increase acceleration is by

53. Decreasing mass, Increasing force

54. The product of an object’s mass and velocity is called its

55. Momentum

56. A person standing on roller skates is holding a heavy rock
A person standing on roller skates is holding a heavy rock. If he throws the rock horizontally to the right, what will be his resulting motion?

57. To the left

58. The amount of gravity between two objects depends on their masses and

59. Distance between them

60. Forces can be added together only if they are

61. Acting in the same direction

62. A student pushes a lawnmower with a force of 15 N
A student pushes a lawnmower with a force of 15 N. What is the force exerted by the mower on his hands?

63. 15 N

64. The momentum of an object is in the same direction as its

65. Velocity

66. What happens when two forces act in the same direction?

67. Added together

68. That force that one surface exerts on another when the two rub against each other is called

69. Friction

70. Mass times acceleration equals the net force acting on an object according to which of Newton’s laws?

71. 2nd Law

72. Which has more momentum, a semi-truck moving at 30 mph or a Chevy S10 truck moving at 30 mph?

73. Semi-truck

74. The greater the mass of an object,

75. The greater the inertia

76. Balanced forces acting on an object

77. Never change object’s motion