A 5g bullet is shot (horizontally)and hits a tree at 600m/s^2 and goes into the tree at a depth 4cm. What is the average friction force that will stop the bullet?
Mass of bullet = 5 gm = 5*10^(-3) kg
the speed with which the bullet hits the tree = v = 600 m/s
the distance travelled ...
With explanations and calculations, the problem is solved.