Question

n a game of pool, a cue ball with an initial velocity of 1.40 m/s directed to the right (along the +x-axis) collides with the five ball, which has equal mass and is initially at rest. The five ball then moves at 1.21 m/s at an angle of 30.0° above the +x direction.

(a) Find the cue ball's final velocity. magnitude direction below the positive x-axis

(b) Is kinetic energy conserved?

Answer #1

A

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