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A 19-g bullet is shot vertically into an 2-kg block. The block lifts upward 5.3 mm...

A 19-g bullet is shot vertically into an 2-kg block. The block lifts upward 5.3 mm . The bullet penetrates the block andcomes to rest in it in a time interval of 0.0010 s. Assume the force on the bullet is constant during penetration and that air resistance is negligible. Find the initial kinetic energy of the bullet. Express your answer in J.

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