10 Kg Bullet Traveling At Speed Hits A 5 5 Kg Block Of Wood And Stays In The Woo

A 0.10 kg bullet traveling at speed hits a 5.5 kg block of wood and stays in the wood. The block with the bullet imbedded in it moves forward with a velocity of 1556.0. What was the velocity (speed) of the bullet immediately before it hit the block?

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