(4) Car A (1200 kg) is parked at the top of an icy incline whose vertical height is 30 m. Car A begins sliding down the incline toward another parked vehicle Car B (900 kg) which is exactly halfway down the incline. The two cars
collide and stick together. If the angle of the incline is 36°, and the coefficient of sliding friction is 0.18,
determine how long it will take for the wreckage to reach the bottom of the incline and their velocity at the bottom
of the incline.