Block X of mass 2 kg travels across a horizontal surface toward block Y of unknown mass that is initially at rest. Block X then collides elastically with block Y A graph of the position as a function of time for block X is shown. Block X and block Y are made of the same material. Which of the following predictions is correct about the motion of block Y immediately after the collision? The acceleration of block Y immediately after the collision is greater than the acceleration of block Y immediately before the collision The kinetic energy of block Y immediately after the collision is greater than the kinetic energy of block X immediately after the collision The change in momentum of block Y from immediately before the collision to immediately after the collision is more than the change in momentum of block X The momentum of the system consisting of block X and block Y immediately after the collision is less than the momentum of the system immediately before the collision
