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A 4.6-g bullet traveling with a speed of 370 m/s penetrates a large wooden fence post...

A 4.6-g bullet traveling with a speed of 370 m/s penetrates a large wooden fence post to a depth of 5.0 cm. What was the average resisting force exerted on the bullet?

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Answer #1

The force is negative because it is in opposite direction of velocity.

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