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An 84.9 kg man is standing on a frictionless ice surface when he throws a 2.00kg book at 11.1m/s. With what velocity does the man move across the ice?

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1 answer
  1. final momentum = initial momentum
    book moves in + direction, man moves in - direction

    2*11.1 + 84.9 v = 0

    v = -22.1/84.9

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