At the end of a bobsled run, the sled comes to a stop after the brakeman applies the brakes. If the bobsled is moving at 100 km/h at the end of a run, (a) how much time does it take to stop after the brakes are applied, and (b) how far does it go while braking? Take the coefficient of kinetic friction between the brakes and the ice to be 1.5, and assume the surface is horizontal.