A small block of mass M is released from rest at the top of the curved frictionless ramp shown above. The block slides down the ramp and is moving with a speed 3.5vi when it collides with a larger block of mass 1.5 M at rest at the bottom of the incline. The larger block moves to the right at a speed 2vi immediately after the collision.

1. Determine the height h of the ramp from which the small block was released in terms of M, vi, h, and constants.

2. The larger block slides a distance D before coming to rest. Determine the value of the coefficient of kinetic friction µ between the larger block and the surface on which it slides, in terms of M, vi, h, D and constants.