AzB Silver Member
In the elastic collision, the ball does not bounce Joe or foul by hitting twice. It stays on the cue ball for a period of time based on the velocity and hardness of the tip. If there is any deflection in the shaft as a rod the tip will move laterally randomly causing squirt if any left or right hand english was part of the aim point by the player.
Answers to frequently-asked questions about the effects of shaft endmass and stiffness on squirt in pool and billiards.