In the figure, block 1 of mass m slides from rest along a frictionless ramp from height h = 3 m and then collides with stationary block 2, which has mass m = 4m. After the collision, block 2 slides into a region where the coefficient of kinetic friction uk is 0.4 and comes to a stop in distance d within that region. What is the value of distance d if the collision is (a) elastic and (b) completely inelastic? (a) Number (b) Number i Unit Unit Frictionless 2 SED W