Here is the problem:
There is conservation of momentum involved along with conservation of kinetic energy.
m1v1+m2v2=m1v1 final - m2v2 final
The Attempt at a Solution
When I do all the calculation and solve the quadratic for part c, I come up with a final velocity of -1 for the heavier block. The question I have is that is this a sign error? It would make more sense that the collision would result in the blocks going in the direction that the heavier object was going. Also, I got 3 for the other block (positive).