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A 22.3-g bullet moving at 1 000 m/s is fired through a one-kg block of wood...

A 22.3-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of 100 m/s. What is the change in the kinetic energy of the bullet-block system as a result of the collision assuming the block is free to move?

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