4. A 0.03-1b bullet traveling at 1300 ft/s strikes the 10-1b wooden block and exits the other side at 50 ft/s as shown. Determine the speed of the block just after

the bullet exits the block. Also, determine the average normal force on the block if the bullet passes through it in 1 ms, and the time the block slides before it stops. The coefficient of kinetic friction between the block and the surface is μ = 0.5. 5