Physics Circular Motion Level: Misc Level

A wheel rotates through an angle of 13.8 rad as it slows down from 22.0 rad/s to 13.5 rad/s. What is the magnitude of the average angular acceleration of the wheel?

a. 0.616 rad /s squared.

b. 111 rad/s squared.

c. 22.5 rad/s squared.

d. 10.9 rad /s squared.