1. The problem statement, all variables and given/known data There are two tracks side by side, same height above ground, one ball is placed on one track, and the other one on the other track. A spring is pulled back, and it hits both of the balls with the same force. Both ramps end at the same place. one track looks like this : ___________________________ its straight. the other one looks like this : ------------\___/------------- if it is hard to tell what the second one looks like, its just a straight ramp, and then it slopes down, and it becomes straight again, then it slopes up and goes back tot he normal height. Whiich ball will end up first at the end of the track? If ball A is on the smooth ramp and ball B is on the second ramp, the one with the depression? 2. Relevant equations conservation of energy 3. The attempt at a solution I originally believed that both would arrive at the end of the ramp at the same time. but we did t his experimentally and ball B, the one with the depression, ends up at the end of the track faster than ball A. Why is this?