A sphere A moving with a speed u and rotating with an angular velocity ω ω , makes a head-on elastic collision with an identical stationary sphere B. There is no friction between the surfaces of A and B, Disregard gravity.
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(b, c, d)
There is an exchange of linear velocities. However, the two spheres cannot exert torques on each other, as their surfaces are frictionless, and the angular velocities of the spheres do not change.
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