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A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After...

A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.97 m/s, at an angle of 31.0° with respect to the original line of motion.

(a) Find the velocity (magnitude and direction) of the second ball after collision.
______ m/s
° (with respect to the original line of motion, include the sign of your answer; consider the sign of the first ball's angle)(b) Was the collision inelastic or elastic?

inelastic

elastic    

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