A billiard ball hitting a second billiard ball can be described as a collision between two solid spheres. The first ball, known as the cue ball, strikes the second ball, also known as the object ball, which is at rest or in motion. Upon impact, several physical phenomena occur, including the transfer of momentum and kinetic energy from the cue ball to the object ball. The collision causes the object ball to move, while the cue ball may experience a change in velocity or direction depending on the angle and force of impact. The collision between the two balls is elastic, meaning that kinetic energy is conserved, and both balls continue to move after the collision. This interaction is fundamental in billiards and is crucial for various shots and strategies in the game.
