here is my problem: The surfaces are frictionless. The tracks are 60degrees from horizontal. A 350 kg mass is released from rest on a track at a height 3.2 m above a horizontal surface at the foot of the slope. It collides elastically with a 468 kg mass initially at rest on the horizontal surface. The mass 468 kg slides up a similar track. The acceleration of gravity is 9.8m/s^2. Part 1) What is the speed of the block 468 kg immediately after the collision? Answer in units of m/s. Part 2) To what maximum height h2 above the horizontal surface will the mass 468 kg slide? Answer in units of m.