physics

A 70.8 kg man is standing on a frictionless ice surface when he throws a 2.3 kg book at 10.5 m/s. With what speed does the man move across the ice as a result?

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asked by Olivia

  1. no speed, if he throws it straight up.

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    posted by Steve

  2. Steve, you are an idiot. A physics problem and why would you assume he threw up. No answer is easy like that.

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    posted by John

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