A thin block of soft wood with a mass of 0.070 kg rests on a horizontal frictionless surface. A bullet with a mass of 4.67 g is fired with a speed of 629 m/s at a block of wood and passes completely through it. The speed of the block is 25 m/s immediately after the bullet exits the block.(a) Determine the speed of the bullet as it exits the block. (b) Determine the loss of kinetic energy of this system (block and bullet).

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