A 61.0 kg ice hockey goalie, originally at rest, catches a 0.177 kg hockey puck slapped at him at a velocity of 21.4 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities be in this case? Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.   Final velocity of the puck Vf puck, m/s? Final velocity of the goalie Vf goalie, m/s?

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