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A 78.5kg ice hockey goalie, originally at rest, catches a 0.120kg hockey puck slapped at him...

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Physics

A 78.5kg ice hockey goalie, originally at rest, catches a0.120kg hockey puck slapped at him at a velocity of 36 m/s. Supposethe goalie and the ice puck have an elastic collision and the puckis reflected back in the direction it came.

a) What would the final velocity of the puck be in this case? Becareful with the sign!

b) What would the final velocity of the goalie be in thiscase?

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