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### 77 Multiple choice questions

2. centrifugal effect is a center fleeing tendency of an object to fly away from center, centripetal is the opposite. It is a center seeking force. example of centrifugal effect is in a car when tangential inertia and a centripetal force are acting upon an object it creates the centrifugal effect in which if you turn left the passenger will scoot towards the door. An example of centripetal force is when you spin a can on a string that enforces it to stay in circular motion.
3. the type of velocity found by dividing theta by seconds
4. omega=theta/t
v=omega(r)
5. 360
6. because 6.28 radians = 360 degrees = number of degrees in a circle.
7. a device that measures acceleration
8. the coefficient resulting from the circumference of a circle being divided by its diameter
9. tangent
10. less than
11. > diameter in
12. 6.28
13. -timing not precise
-didn't find the exact point at which the hypotenuse reaches the other leg of the triangle with the laser
14. a merry-go-round
15. rotation
16. long play record with 33.3rpm
17. one earth revolution equal to 365.25 days
18. (o-e)/e (100)
19. inward
20. rotation is the turning on an internal axis while revolution is turning on an external axis.
21. theta
22. the have the same
23. an apparent center fleeing effect
24. January 3
25. tangent
26. north/south pole, internal, Sun, external
28. v=âˆšrg
29. rotation=revolution
30. both rotation and revolution
31. 1mile
32. one earth rotation equal to 24 hours or 86,400 seconds
33. the pig overcomes air friction by flapping its wings. this creates a centripetal force on the pig which in turn counters friction
34. mg
35. rotation and revolution
36. Earth Year (365.25days)
37. throwing a football (the spiral)
38. the outside horse
39. T
40. the direction of gravitational pull of sun on the earth
41. the direction of a planet's momentum while in orbit
42. a)2xa
b)4xa
c)8xa
43. time taken for Moon to orbit Earth (29.5days)
44. Merry-Go-Round
45. direct
47. 360 degrees of 6.28 radians
48. angle measure equal to length of radius around the circumference of a circle (57.3 degrees)
49. d)all of these
50. The direction of the net force is in a radial direction towards the center/centripetal
51. a straight line around which circular motion takes place
52. the wide rim
53. omega
54. centripetal force and tangential inertia
55. the Earth
56. a device that measures acceleration
57. spinning with axis outside of a system
58. spinning with axis inside a system
59. a radian is an angle measure equal to a radius around a circle
60. outward
61. greater than
62. July 3
64. year
65. Earth Day (24hours)