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A pitcher throws a 0.70 kg ball of clay at a 4.0 kg block of wood. The clay sticks to the wood on impact, and

A pitcher throws a 0.70 kg ball of clay at a 4.0 kg block of wood. The clay sticks to the wood on impact, and their joint velocity afterward is 1.2 m/s. What was the original speed of the clay (in m/s)?

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