Two blocks are released from rest on either side of a frictionless half-pipe. Block B is more massive than block A. The height HB from which block B is released is less than HA, the height from which block A is released. The blocks collide elastically on the flat section. After the collision, which is correct? A. Block A rises to a height greater than HA and block B rises to a height less than HB. B. Block A rises to a height less than HA and block B rises to a height greater than HB. C. Block A rises to height HA and block B rises to height HB. D. Block A rises to height HB and block B rises to height HA. E. The heights to which the blocks rise depends on where along the flat section they collide. I honestly didn't understand where to start with this problem, and got confused on the solution walkthrough. It basically wrote out two equations based on the conservation of momentum and conservation of energy, which said could be used to calculate the final speeds and then the final heights. Is there a more intuitive, less complicated way of figuring out this problem or does it require multiple equations? If someone could kindly give me an explanation for this problem it would be much appreciated!