A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5s. Through how many revolutions did the wheel turn during the 5s of braking?

Answer 1

displacament=wi*time-1/2*(2/5 rev/s^2)*time^2

solve for displacement (in revs).