Asked by Anonymous

a car of mass 1214.5 kg is moving at a speed of 62.5 mph when it misses a curve in the road and hits a bridge filling. If althe car comes to rest in 0.236 s, How much average power (in watts) is expended in this interval
Answered by oobleck
62.5 mi/hr = 27.94m/s
power = energy/time = (1/2 mv^2)/time = 1214.5/2 * 27.94^2 / 0.236 W