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Here's a basketball problem: A 80.0 kg basketball player is running in the positive direction at 7.0 m/s. She is met head-on by a 107.4 kg player traveling at 5.5 m/s toward her. If the 107.4 kg player is knocked backwards at 2.4 m/s, what is the resulting velocity of the 80.0 kg player?

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