posted by Ashley .
A car moving at 35 mi/h is stopped by jamming on the brakes and locking the wheels. The car skids 53 ft before coming to rest. How far would the car skid if it were initially moving at 56 mi/h?
The skid distance depends upon the kinetic energy, which is proportional to V^2.
(56/35)^2 * 53 = ?? ft.