A person is riding a bicycle, and its wheels have an angularvelocity of 27.6 rad/s. Then, the brakes are applied and the bikeis brought to a uniform stop. During braking, the angulardisplacement of each wheel is 13.2 revolutions. (a) How much time does ittake for the bike to come torest? (b) What is the anguaracceleration (in rad/s2) of each wheel?