1. Newton’s Laws
Review game

2. The force you have to overcome to start an object moving is_____________________.
Rolling friction
Static friction
Sliding friction
Air resistance

3. b. Static Friction

4. Which label goes on the horizontal axis?
Distance
Force
Mass
Acceleration

5. a. Distance

6. Which of the following is an example of a noncontact force?
Musician playing piano
Athlete hitting a ball with a bat
A ball falling after you toss it in the air
Karate expert breaking a stake of wood

7. c. A ball falling after you toss it in the air.

8. An object’s weight is ________ its mass.
Equal to
Less than
Proportional to
Greater than

9. c. Proportional

10. An arrow can be used to represent a force
An arrow can be used to represent a force. The length of the arrow represents ____________.
Direction of the force
Strength of the force
Mass of the force
Acceleration of the force

11. b. Strength of the force

12. A skater slowing as she slides across the ice is an example of ___________.
Inertia
Momentum
Friction
Mass

13. c. Friction

14. A planet is discovered that is the same size as Earth and has the same gravitational acceleration, but has twice the mass. If you weigh 700 N on Earth, on the new planet you would weight__________.
350 N
700 N
1,400 N
2,800 N

15. c. 1,400 N

16. Which of the following is a force?
Momentum
Friction
Acceleration
Velocity

17. b. Friction

18. The unit of force is _________.
m/s
The hertz
The joule
The newton

19. d. The newton

20. Which of the following is an example of an unbalanced force?
Book sitting on a table
Car sitting in the garage
Person on an elevator going down
Person leaning on a wall

21. c. Person on an elevator going down

22. The force that opposes motion is ___________.
A balanced force
An unbalanced force
An accelerating force
Friction

23. d. Friction

24. Which of the following is a force or motion that is involved in the Moon orbiting Earth?
A force pulling the Moon towards the center
A speed at right angles to the line form the mass of the Moon to the center of Earth
Acceleration towards the center of Earth
All of the above

25. d. All of the above

26. An unbalanced force acting on an object causes it to ___________.
Move at a constant speed
Continue in a straight line
Not change its velocity
Accelerate

27. d. Accelerate

28. Forces that are equal in size but opposite in direction are __________.
Balanced forces
Frictional forces
Inertial forces
Net forces

29. a. Balanced forces

30. Which of the following is NOT and example of circular motion?
Car turning a corner
Yo-yo on a string going in a circle
Car accelerating onto highway
The Moon’s path around Earth

31. If gravity did NOT affect the path of a horizontally thrown ball, the ball would ___________.
Go straight up
Travel horizontally
Fall straight down
Follow a curved path

32. b. Travel horizontally

33. Unbalanced forces can make an object accelerate by __________.
Changing its speed
Changing its direction
Both a and b
Neither a nor b

34. c. Both a and b change its speed and direction

35. When two birds are pulling on a worm and the worm moves towards the first bird, you know that the forces are________.
Long-range
Action-reaction
Unbalanced
Balances

36. c. Unbalanced

37. Which of the following keeps a satellite in orbit?
Frictional force
Kinetic force
Centripetal force
Acceleration force

38. c. Centripetal force

39. We are able to walk forward because ____________.
We push on the air
We push on the ground
The air pushes on us
The ground pushes on us

40. d. The ground pushes on us

41. A 3,000-N force gives an object an acceleration of 15 m/s
A 3,000-N force gives an object an acceleration of 15 m/s. The mass of the object is ____________. m=f/a
45,000 kg
1,500 kg
200 kg
15 kg

42. c. 200 kg

43. The relationship among force, mass, and acceleration is stated in ___________.
The law of conservation of momentum
Newton’s first law of motion
Newton’s second law of motion
Newton’s third law of motion

44. c. Newton’s second law of motion

45. A 300-N force acts on a 25- kg object
A 300-N force acts on a 25- kg object. The acceleration of the object is ____________. a=f/m
7,500 m/s^2
300 m/s^2
25 m/2^2
12 m/s^2

46. d. 12 m/s^2

47. According to Newton’s second law of motion, ___________.
F=mv
F=m/a
A=Fnet/m
F=ma

48. d. F=ma

49. An object of large mass has _____ than an object of small mass.
Less momentum
More momentum
Less weight
Greater acceleration

50. b. More momentum

51. Which of the following is the equation for momentum?
P=m/v
P=m X v
P=v/m
P=w X s

52. b. p= m X v

53. A student hits a nail with a hammer
A student hits a nail with a hammer. During the collision, there is _____________.
A force on the hammer but not on the nail
A force on the nail but not on the hammer
A force on the nail and also on the hammer
No force on either object in the collision

54. c. A force on the nail and also on the hammer

55. Which of the following best completes the phrase
Which of the following best completes the phrase? For every action there is ___________.
A reaction
An equal reaction
An opposite reaction
An equal and opposite reaction

56. d. An equal and opposite reaction

57. Fred (m=67 kg) foolishly attempts to jump from a canoe (m=45 kg) to the dock. If he jumps forward with a speed of 3.3 m/s, how fast will the canoe move backwards
2.2 m/s
22 m/s
4.9 m/s
49 m/s

58. c. 4.9 m/s

59. Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the _________ direction to that of the first object.
Opposite
Same
Right angle
Vertical

60. a. Opposite