A billiard ball in motion possesses (movement across the table) and often angular momentum (rotation or spin).
Pocket billiards, commonly known as pool, is often described as "geometry in its most challenging form". Beyond the green felt and mahogany rails lies a complex laboratory of classical mechanics where every shot is a demonstration of mathematical precision and physical laws. 1. Collision Dynamics and Momentum
: A comprehensive overview by Dr. Dave Alciatore, a leading authority on pool physics. Amateur Physics for the Amateur Pool Player