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Question: A sled of mass 4.45 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.31 m/s. A 1.12-kg book is dropped vertically onto the sled.

Part A: At what speed does the sled move once the book is on it?

I want help to find at what speed the sled move once the book is on it.

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