Need to find the net force and the average force..... 1. The problem statement, all variables and given/known data A bullet of mass 12 g strikes a stationary fixed block of wood at a speed of 400m/s, penetrating to a depth of 3.0cm. Calculate the average net force acting on the bullet while it is in the wood. Calculate the average force exerted on the wood by the bullet. 2. Relevant equations Fnet= m x a W=1/2mv^2 3. The attempt at a solution I found the force net using the kinetic energy and work equation. I don't really know how to find the average force.