0 kg block is released from rest 2.0m high at the top of a 30 degree frictionless incline. The block makes a head-on elastic collision with another 3....

A 4.0 kg block is released from rest 2.0m high at the top of a 30 degree frictionless incline. The block makes a head-on elastic collision with another 3.0 kg block intially at rest on a horizontal surface at the bottom of the incline. If the coefficient of friction between the horizontal surface and the second block is .30, how far will the second block go on the ground?