On a frictionless, horizontal air table, puck A (with mass 0.240 kilogram) is moving toward puck B (with mass 0.350 kilogram), that is initially at rest. After the collision, puck A has a velocity of 0.114 m/s to the left, and puck B has velocity 0.660 m/s to the right.
Part A. Determine the speed of puck A before the collision?
Part B. Determine the change in the total kinetic energy of the system that occurs during the collision.