1. The problem statement, all variables and given/known data "A bullet is fired through a 5.0 cm thick board of some material. The bullet strikes the board with a speed of 200 m/s, and emerges out the other end at 100 m/s. 2. Relevant equations a= (change in velocity)/(change in time) average velocity = .5(initial v + final v) 3. The attempt at a solution a= (-100 m/s)/(.000333 seconds) = -300300 m/s^2 I found .000333s as the time it took for the bullet to pass through the board, using the average velocity of 150 m/s. Is this correct? SOLVED.