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A 80.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped...

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Physics

A 80.0 kg ice hockey goalie, originally at rest, catches a 0.150kg hockey puck slapped at him at a velocity of 18.0 m/s. Supposethe goalie and the ice puck have an elastic collision and the puckis reflected back in the direction from which it came. What wouldtheir final velocities (in m/s) be in this case? (Assume theoriginal direction of the ice puck toward the goalie is in thepositive direction. Indicate the direction with the sign of youranswer.)

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4.3 Ratings (889 Votes)
The total momentum of the system is a conserved quantity Equating the total momentum before and after the collision for objects with mass m and m m v m v m vf m vf i and f denoting initial and final velocities or initial momentum    See Answer
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