swimming POOL

Today, I remembered that last winter my friends and I went to play pool at Hawaiian Brians after a a tough wrestling tournament. Since it was late there was hardly anyone else there. Thinking of this day reminded me of physics and the concept of momentum we are learning about. At first before I hit the cue ball, it has a momentum of 0kgm/s and a velocity of 0m/s. Once i strike the cue ball, the ball will gain momentum and velocity. In a bouncy or elastic collision momentum and kinetic energy is conserved. P1=Pf (initial momentum = final momentum). KE1=KEf (initial kinetic energy = final kinetic energy). Therefore, after the cue ball hits the balls and they all go off in different directions, all of their momentum combined should add up to the momentum of the cue ball when it them. Also, their kinetic energies should add up to the kinetic energy of the cue ball.