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A bullet penetrates a wooden block and loses its velocity by a half. What is the relation between the initial kinetic energy of the

A bullet penetrates a wooden block and loses its velocity by a half. What is the relation between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? Eki Ekf Ek Ekj || = = 12 12 44 Ek = 1/4 Ekj = 1 Eki Ekj Eki = 16 Ekj

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