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A 5.10-kg ball, moving to the right at a velocity of +2.05 m/s on a frictionless...

A 5.10-kg ball, moving to the right at a velocity of +2.05 m/s on a frictionless table, collides head-on with a stationary 7.70-kg ball. Find the final velocities of the balls if the collision meet the following conditions. (

a) elastic 5.1-kg ball = ? m/s

7.7-kg ball = ? m/s

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