A moving white hockey puck collides elastically with a stati…
A moving white hockey puck collides elastically with a stationary red hockey puck on a frictionless horizontal surface. No net external force acts on the two-puck system. Select all of the following statements that must be true for this collision. (1) The kinetic energy of the white puck is conserved (same before and after the collision). (2) The linear momentum of the white puck is conserved. (3) The linear momentum of the two-puck system is conserved.