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A man holding a rock sits on a sled that is sliding across a frozen lake...

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Physics

A man holding a rock sits on a sled that is sliding across afrozen lake (negligible friction) with a speed of 0.450 m/s. Thetotal mass of the sled, man, and rock is 97.5 kg. The mass of therock is 0.280 kg and the man can throw it with a speed of 17.5 m/s.Both speeds are relative to the ground. Determine the speed of thesled (in m/s) if the man throws the rock forward (i.e., in thedirection the sled is moving).

Determine the speed of the sled (in m/s) if the man throws therock directly backward.

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