Suppose two balls A and B are connected by a compressed massless spring initially, and they are not under any other forces. The spring is then released and the result is observed. Scenario 1: Ball A has the same mass as Ball B. Scenario 2: Ball A has greater mass than Ball B. Define the reference point to be the center of the spring in the initial state. (Thus the reference frame is inertial, as there are no other forces on the system initially.) Questions: Does Ball B has the same final velocity with respect to the reference point in both scenarios? Is Ball B's final relative velocity with respect to Ball A the same in both scenarios?