2. Let’s Play! Please listen carefully and think before answering.
Good Luck!!

4. Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Friction
Calculations
Miscellaneous
100
100
100
100
100
100
200
200
200
200
200
200
300
300
300
300
300
300
400
400
400
400
400
400
500
500
500
500
500
500

5. Describe Newton’s 1st Law of Motion.

6. Objects at rest stay at rest and objects in motion maintain their velocity unless acted on by an unbalanced force.

7. What is another name for Newton’s 1st Law?

8. Law of Inertia

9. Define ‘inertia’.
Newton's 1st Law 300

10. An object’s tendency to resist a change (in motion).

11. True or false: If an object has a greater force acting on it, it will have a greater inertia. Explain.
Newton's 1st Law 400

12. False. Inertia isn’t related to force
False. Inertia isn’t related to force. Inertia is related to mass… the greater the mass the more inertia.

13. Explain how inertia effects: A coffee cup sitting on a desk
Newton's 1st Law 500
Explain how inertia effects:
A coffee cup sitting on a desk
A person traveling in a car when the car stops suddenly

14. The coffee cup is at rest and has mass, so it will stay at rest unless a force changes it’s motion
The person has mass so will stay in motion at the same speed and in the same direction unless an unbalanced force changes their motion

15. What is Newton’s 2nd Law
Newton's 2nd Law100

16. (Unbalanced) Force = mass x acceleration
F=ma

17. If mass stays constant, as force decreases acceleration ______________.
Increases
stays the same
C. Decreases
D. Not enough info given
Newton's 2nd Law200

18. C. Decreases

19. If acceleration stays constant, as force increases mass______________.
stays the same
C. Decreases
D. Not enough info given
Newton's 2nd Law300

20. A. Increases

21. If force stays constant, as mass increases acceleration ______________.
stays the same
C. Decreases
D. Not enough info given
Newton's 2nd Law400

22. C. Decreases

23. When a gun is fired, although the force of the bullet traveling forward and the force of the gun traveling backward are equal, you don’t get hurt. Explain using Newton’s 2nd law.
Newton's 2nd Law500

24. The action/reaction forces are equal so: Because the bullet is so small in mass it has a greater acceleration and because the gun has a greater mass it has a smaller acceleration.

25. Define Newton’s 3rd Law.
Newton's 3rd Law 100

26. For every action force there is a reaction force that is equal in size and opposite in direction.

27. Newton's 3rd Law 200
According to Newton’s 3rd Law, if the action force is a foot pushing backwards on the floor, then what is the reaction force?

28. The floor pushing forwards on a foot

29. Which statement about action-reaction forces is incorrect?
There are always two
They are always equal
They always act on the same object
They always occur at the same time
Newton's 3rd Law 300

30. c. They always act on the same object
(They act on each other)

31. True or false: One example of an action-reaction pair is gravity and normal force acting on objects on the ground. Explain
Newton's 3rd Law 400

32. False, Gravity and Normal Force act on the same object, action-reaction pairs act on eachother

33. Explain how Newton’s Cradle shows Newton’s 3rd Law
Explain how Newton’s Cradle shows Newton’s 3rd Law. Then give another example of the 3rd Law at work
Newton's 3rd Law 500

34. When one sphere is released it exerts an action force on the rest, but an equal reaction force is exerted back in the opposite direction.
Examples vary.

35. Friction 100
Define friction.

36. The force that opposes motion that will eventually slow objects that are in motion

37. What are the two main types of friction, define each?

38. Static: at rest
and
Kinetic: in motion

39. DAILY DOUBLE
Friction 300

40. What are the 3 types of Kinetic Friction? Give an example for each.

41. Sliding, Rolling, Fluid

42. Can a moving object ever travel in the same direction as friction
Can a moving object ever travel in the same direction as friction? Can a moving object ever travel in the same direction as applied force?
Friction 400

43. No/ Yes
Friction always opposes motion, but applied force can change direction to slow an object

44. Explain how to increase and decrease friction.

45. Increase: make a surface rougher, add weight, sand/salt, etc.
Decrease: lubricants, replace sliding friction with rolling friction, decrease weight, etc.

46. What is the formula to calculate momentum?
Calculations100

47. Momentum= mass x velocity
P=mv

48. If mass is 20kg and acceleration is 14.2 m/s2 north, find force.
Calculations200

49. 284 N north

50. Calculations300
What are the formulas to calculate mass and acceleration?

51. m= F/a
a=F/m

52. If an object has a momentum of 1000 kg/m/s going west, and the mass of the object is 25 kg, what is the velocity?
Calculations500

53. 40 m/s west

54. Calculations400
What is the mass of an object traveling 2.8 m/s2 south if the force is N?

55. 63.68 kg

56. What does it means if measurements are vector or scalar?
Miscellaneous 100

57. Vector- has direction
Scalar- no direction

58. This is necessary for all objects to accelerate.
Miscellaneous 200

59. Unbalanced Forces

60. Explain the difference between mass and weight and how each will be affected by gravity.
Miscellaneous 300

61. Mass is the amount of matter in something, weight is the force of gravity acting on an object’s mass. Mass doesn’t change, but weight will change if there is a shift in gravity.

62. Miscellaneous 400
Give an example of each of Newton’s Laws

63. Answers will vary.

64. Daily
Double!
Miscellaneous 500

65. Miscellaneous 500 Draw 2 examples of free body diagrams:
1). An object at a constant speed to the right
2. An object speeding up to the right.