1. A DVD player changes speed from 0 rpm to 2800 rpm in 2 sec. How many revolutions does it make in that time?

a. 23.3

b. 46.7

c. 52.2

d.92.4

2. A bicycle wheel accelerates from rest to 60 rpm in 3 sec. How many cycles does it make in that time?

a. 3

b. 4.5

c. 5.25

d. 1.5

3. A disk decelerates at a constant 5.00 s2 from 2300. rad/sec for 9.60 sec. How many radians does it turn through in this time?

a. 36,000

b. 16,500

c. 24,200 d. 21,900

4. A man is travelling at 25 m/s on the edge of a centrifuge device used for testing astronauts and airmen. If the arm is 20 m long, what is the angular speed of the centrifuge in rpm?

a. 15.5

b.23.2

c. 11.9

d. 5.6

5. A satellite is spun down from 25 rpm to stationary using a constant deceleration of 6.35s2. How many revolutions does it make?

a. .086 rev

b. 11.4 rev

c. .21 rev

d. 742 rev

6. A wheel that is 25 cm in diameter rotates through 60. How far has the wheel moved if there is no slipping?

a. 12.6 cm

b. 26.2 cm

c, 13.1 cm

d. 23.1 cm

7. A 3 cm radius ball rolled 12 m in 10 sec. What is its angular displacement?

a. 40 rads

b. 4000 rads

c. 4 rads

d. 400 rads