Physics
posted by Kevin .
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?

displacament=wi*time1/2*(2/5 rev/s^2)*time^2
solve for displacement (in revs).
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