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A 7.00 g bullet, when fired from a gun into a 0.90 kg block of wood...

A 7.00 g bullet, when fired from a gun into a 0.90 kg block of wood held in a vise, penetrates the block to a depth of 9.20 cm. This block of wood is next placed on a frictionless horizontal surface, and a second 7.00 g bullet is fired from the gun into the block.

To what depth will the bullet penetrate the block in this case? cm

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