A stop shot is a pool shot in which the cue ball (white) stops upon striking the object ba...

A stop shot is a pool shot in which the cue ball (white) stops upon striking the object ball (red). Modeling the collision between the two balls as a perfectly elastic collision of two rigid bodies with frictionless contact, determine which condition must be true for the preimpact angular velocity of the cue ball in order to properly execute a stop shot: (a) ω0 < 0; (b) ωs = 0; (c) ω0 > 0.

Note: Concept problems are about explanations, not computations.

Figure P8.78