In Figure block 1 of mass m1 slides from rest along a frictionless ramp from height h

Question:

In Figure block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.50 m and then collides with stationary block 2, which has mass m2 = 00m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction μk is 0.500 and comes to a stop in distance d within that region. What is the value of distance d it the collision is

(a) Elastic and

(b) Completely inelastic?