A 70.0 kg ice hockey goalie, originally at rest, has a 0.280 kg hockey puck slapped at him at a velocity of 33.5 m/s. Suppose the goalie and the puck have an elastic collision, and the puck is reflected back in the direction from which it came. What would the final velocities  v goalie and vpuck, respectively, be in this case? Assume that the collision is completely elastic.

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Q: A 70.0 kg70.0 kg ice hockey goalie, originally at rest, has a 0.110 kg0.110 kg hockey puck slapped…

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A: Solution

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Q: What amount of kinetic was lost in the collision?

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