t = (2v₀)/(7µg)
Most ball-to-ball impacts in pool are nearly elastic , meaning kinetic energy is conserved and the balls bounce off each other with very little energy lost to heat or sound [18]. the physics of pocket billiards pdf
The rails (cushions) act as compliant springs. The angle of incidence is approximately equal to the angle of reflection, assuming a rolling ball. t = (2v₀)/(7µg) Most ball-to-ball impacts in pool