Multiple-Concept Example 8 provides useful background for part b of this problem. A motorcycle, which has an initial linear speed of 6.8 m/s, decelerates to a speed of 2.0 m/s in 5.2 s. Each wheel has a radius of 0.69 m and is rotating in a counterclockwise (positive) direction.
(a) What is the constant angular acceleration? (Indicate direction by the sign of the angular acceleration.)
(b) What is the angular displacement (in rad) of each wheel?