A28.5 g bullet is fired horizontally into a 1.13 kg wooden block resting on a horizontal surface with coefficient of friction 0.227. the bullet goes through the block and comes out with a speed of 394 m/s. if the block travels 3.42 m before coming to rest, what was the initial speed of the bullet? the acceleration of gravity is 9.8 m/s 2 . answer in units of m/s