A 9.0 kg bowling ball races down the lane at 15 m/s before striking a bowling pin (at rest) with a mass of 0.85 kg. If the 0.85 kg pin bounces backward with a velocity of 45 m/s, what is the velocity of the bowling ball after the collision

Explanation:

The system ball-pin is modelled by the Principle of Moment Conservation:

The velocity of the bowling ball after the collision is:

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