1. Circular motion About angular motion

2. Which angle is bigger? 1.5 degrees 2.5 radians 3.5 revolutions 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

3. Is rotating my arm quickly an example of angular acceleration? 1.Yes 2.no 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

4. In class, a red ball was moved in a circle by a motor. The ball started at rest. The motor turned on. The ball sped up until it reached the motor’s “maximum” velocity. The motor was turned off. The ball slowed down until it stopped.

5. Does the red dot experience alpha (angular acceleration) after revolving a while, while the motor is still on? 1.Yes 2.no 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

6. Does the red dot experience alpha ever after turning motor on? 1.Yes 2.No 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

7. Does the red dot experience alpha ever after turning motor off? 1.Yes 2.No 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

8. After turning off the CCW (counter- clockwise) motor, is ang. Accel… 1.Positive 2.negative 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

9. After turning off the CW (clockwise) motor, is ang. Accel… 1.Positive 2.negative 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

10. Is the red ball angularly accelerating? [moving in circle, constant speed] 1.Yes 2.No 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

11. Is the red ball accelerating? [moving in circle] 1.Yes 2.No 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

12. Which direction is the tangential velocity at the top of a CCW circle 1.Up 2.Down 3.Left 4.Right 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

13. Which direction is the tangential velocity at the bottom of a CCW circle 1.Up 2.Down 3.Left 4.Right 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

14. Blank slide

15. Which direction is the centripetal acceleration at the bottom of a CCW circle 1.Up 2.Down 3.Left 4.Right 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

16. Which direction is the centripetal acceleration at the top of a CCW circle 1.Up 2.Down 3.Left 4.Right 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

17. Which way is the constant-speed object accelerating in a circle? (on left, moving CCW) 1.Up 2.Down 3.Left 4.right 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

18. Which way to turn the car to make your date slide towards you? 1.Right 2.Left 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

19. Which force is bigger at bottom of a vertical circle? 1.T 2.Mg 3.same 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849

20. Have you listened to any podcasts? 1.Yes 2.No 1234567891011121314151617181920 2122232425262728293031323334353637383940 414243444546474849