During a ballistic test designed to measure the muzzle velocity of a rifle, a 7.90 g bullet is fired into a 6.20 kg wooden block of mass sitting on a table. The block slides 13.3 cm across the table after the bullet become d embedded into it before it comes to rest. The coefficient of kinetic friction between the table and the block is 0.400. What was the speed of the bullet before it entered the block?