science , physics
posted by Anonymous .
A person is riding a bicycle, and its wheels have an angular velocity of +15.5 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is +15.5 revolutions.
(a) How much time does it take for the bike to come to rest?
(b) What is the angular acceleration of each wheel?