1. The problem statement, all variables and given/known data A block of mass M = 1.0 kg contains a coiled spring and a ball of mass m = 0.25 kg. The spring is released when the block-ball system is at rest at the edge of a frictionless plane inclined 200 from the horizontal (see diagram). The ball, initially 2.0 m above a horizontal floor, strikes the floor a horizontal distance of 3.0 m from the release point. a) How far along the plane does the block move before coming to rest? b) How much energy was initially stored in the spring? 2. Relevant equations 3. The attempt at a solution Im just confused on what is happening in the problem. Does the block move back up the incline when the ball is pushed out. What does it mean how far does it travel. Its initaly at rest right, or does it slide down the hill and gain some speed then suddenly stop at the end and transfer the momentum to the projectile?