1. The problem statement, all variables and given/known data A block of mass m1 = 5.00 kg is released from A. It makes a head on elastic collision at B with a block of mass m2=10.0kg that is initially at rest. Calculate the maximum height to which m1 rises after the collision 2. Relevant equations Pi = Pf Ef= Ei + other work 3. The attempt at a solution 1/2 m1v1^2 = m1gh v1 = square root of 2gh = 10 m/s Pi = Pf m1v1 +m2v2 = m1c1 + m2c2 m1v1 = m1c1 + m2c2 m1(v1 - c1) = m2c2 1/2 m1v1^2 = 1/2 m1c1^2 + 1/2 m2c2^2 m1(v1^2 - c1^2) = m2c2^2 then i used that and divided by the Pi = Pf and i got (v1+c1) = c2 all right I'm stuck around here and have no clue what to do from here. Someone help me please?