1. The problem statement, all variables and given/known data Blocks a (mass 3.50 kg ) and b(mass 10.00 kg ) move on a frictionless, horizontal surface. Initially, block b is at rest and block a is moving toward it at 2.00 m/s . The blocks are equipped with ideal spring bumpers. The collision is head-on, so all motion before and after the collision is along a straight line. Let positive x be the direction of the initial motion of a. find maximum energy stored in the bumper and the velocity of a and b at that time 2. Relevant equations 3. The attempt at a solution this question seems easy, but i just don't know how to start. can anyone give me a hint?