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Conservation of momentum

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How fast must a 10.5g bullet be traveling when it strikes a ballistic pendulum that consist of a block of wood of mass 3.0kg that is suspended by a cord? The bullet gets embedded in the block. The block rises by .22m after the impact.

a. 143 m/s
b. 595 m/s/s
c. 595 m/s
d. 2.67 m/s

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Answers a question based on the conservation of momentum.

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Answer: c. 595 m/s
From the conservation of momentum
mv = (m+M) V ...

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