004-kg bullet is fired into a 0.200-kg block of wood at rest on a horizontal surface. After impact, the block with the embedded bullet slides 8.00 m...

A 0.004-kg bullet is fired into a 0.200-kg block of wood at rest on a horizontal surface. After impact, the block with the embedded bullet slides 8.00 m before coming to rest. If the coefficient of friction is 0.400, what is the speed of the bullet before impact?