Question

A 170 g cue ball is hit directly to the right with an initial velocity of...

A 170 g cue ball is hit directly to the right with an initial velocity of 4 m/s. It undergoes an elastic collision with a 155 g pool ball at rest.

A. Find the final velocity of the cue ball (including the sign).

B. Find the final velocity of the pool ball (including the sign).

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Answer #1

The final velocities of two bodies undergoing elastic collision are as given below,

Final velocity of first body,

Final velocity of second body,

Let the cube ball be the first body and pool ball be the second body. Then given,

a) Therefore, the final velocity of the cue ball is given by

b) Also the final velocity of the pool ball is given by

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