1. Unit 2, Day 19 Review

2. Review Activities  Free Body Diagrams (Notes)  Class Work  Whiteboard Review  Break  Whiteboard Review

3. Free Body Diagrams  #1: Applied Force  Force put on object by person  Direction of force causes movement in SAME direction

4. Free Body Diagrams  #2: Force of Gravity (Weight)  Force the earth attracts an object with  Always points “down” towards earth

5. Free Body Diagrams  #3: Normal Force  Always perpendicular and upward from surface  Newton’s 3 rd Law: Equal and Opposite

6. Free Body Diagrams  #4: Friction Force  Force made AGAINST object’s movement along the surface

7. Free Body Diagrams  A book is at rest on a table top.

8. Notes  If there is no acceleration, opposing forces should be equal!  No Acceleration  Constant Velocity  Rest

9. Free Body Diagrams  A girl is holding onto a rope from the ceiling motionless.

10. Free Body Diagram  An egg is free-falling from a nest in a tree. Neglect air resistance.

11. Free Body Diagram  An egg is falling (not freely, do not neglect air resistance) from a nest in a tree.

12. Free Body Diagram  A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Include friction.

13. Free Body Diagram  A rightward force is applied to a book in order to move it across a desk at constant velocity. Include friction.

14. Free Body Diagram  A car is parked on a sloped street.

15. Free Body Diagram  A hot air balloon is accelerating upward. Include air resistance.

16. Free Body Diagram  A car is coasting (the driver is not touching the pedals) to the right and slowing down.

17. Break

18. Whiteboard Review  60 seconds to make a school appropriate name  Don’t just use your initials  Don’t shout out answers  Wait for 5-4-3-2-1  You may use notes

19. #1  Distance, speed, and mass are examples of _________.

20. #2  Displacement, velocity, acceleration, and force are examples of ____________.

21. #3  A scalar has which of the following? A. Measurement B. Direction C. Letter without an arrow D. Letter with an arrow

22. #4  Draw the xy coordinate graph. Show:  Which axis is X? Which axis is Y?  Which way is positive, which way is negative?

23. Switch!

24. Practice  Mrs. Larkin runs forward 10 feet. She then turns around and runs back 7 feet. What distance did she run?

25. Practice  Mrs. Larkin runs forward 13 feet. She then turns around and runs back 6 feet. What displacement did she run?

26. Switch!

27. Practice  Shadow runs 3 meters east, then 2 meters north, then 3 meters west. What distance did she run?

28. Practice  Shadow runs 4 inches north, then 5 inches east, then 4 inches south. What displacement did she run?

29. Switch!

30. Practice  Ms. Parsons drives to and from Da Vinci Design, which is located 5 miles from her house.  A. What is the total distance she drives every day?  B. What is her displacement every day?

31. Practice  La Luz runs a complete circle around the classroom. What displacement did she run? (Use feet)

32. Switch!

33. Practice  La Luz and Shadow are racing each other around a circular track. The track is 500 meters around and 159 meters across. La Luz gets tired and stops halfway around. Shadow finishes the race.  A. Who has the greater displacement?  B. By how many meters? 500 meters around 159 meters across

34. Practice  La Luz and Shadow are racing each other around a circular track. The track is 500 meters around and 159 meters across. La Luz gets tired and stops halfway around. Shadow finishes the race.  A. Who ran the greater distance?  B. By how many meters? 500 meters around 159 meters across

35. Switch!

36. Practice  Which of the following are units for velocity? 1. meters/second 2 2. meters/second 3. feet/hour 4. miles 5. kilometers/minute

37. Practice - Whiteboards  Running 59.8 miles in 2 hours When finished with whiteboards, get this problem into notebooks

38. Switch!

39. Practice - Whiteboards  Running 150.6 kilometers in 3 hours When finished with whiteboards, get this problem into notebooks

40. Question  Give an example of the units for acceleration using feet and seconds.

41. Switch!

42. Question  What are the two equations involving acceleration?

43. Question  As a school bus slows to a stop, it slows from 9.00 m/s to 0.00 m/s in 5.00 seconds. What is its acceleration?

44. Switch!

45. Question  A skateboarder goes from a standstill to a speed of 6.7 m/s in 12 seconds. What is their acceleration

46. Question  A sprinter increases from 5.0 m/s to 7.5 m/s over a period of 1.25 seconds. What is their acceleration?

47. Switch!

48. Whiteboard Activity  A 1200 kg car is driving at 10 m/s. When it reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.  What is the car’s average velocity?

49. Switch!

50. Whiteboard Activity  A 1200 kg car is driving at 10 m/s. When it reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.  What is the car’s change in time?

51. Whiteboard Activity  A 1200 kg car is driving at 10 m/s. When it reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.  What is the car’s acceleration?

52. Switch!

53. Whiteboard Activity  A 1200 kg car is driving at 10 m/s. When it reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.  What is the force on the car?

54. Question  What is Newton’s First Law?

55. Switch!

56. Question  What is Newton’s Second Law?

57. Question  What is Newton’s Third Law?

58. Whiteboards  A soccer player kicks a 0.5 kg stationary ball with a force of 45-Newtons. What is the force on the player’s foot?

59. Switch!

60. Whiteboards  A person is standing on a bathroom scale. They then jump upwards. At the instant the student pushes off, what happens to what the scale says about the weight?

61. Free Body Diagrams

62. Switch!

63. Free Body Diagrams

65. Switch!

66. Free Body Diagrams

68. Switch!

69. Free Body Diagrams

72. Switch!

73. Free Body Diagrams

76. Switch!

77. Free Body Diagrams

80. Switch!

81. Free Body Diagrams

84. Homework  Review for Exam  YouTube videos for review problems  Thursday 11/12 for even classes  Friday 11/13 for odd classes