Chapter 4, Problem 41GP

|| A rifle shoots a 4.20 g bullet out of its barrel. The bullet has a muzzle velocity of 965 m/s jus: as it leaves the barrel. Assuming a constant horizontal acceleration over a distance of 45.0 cm starting from rest, with no friction between the bullet and the barrel, (a) what force does the rifle exert on the bullet while it is in the barrel? (b) Draw a free-body diagram of the bullet (i) while it is in the barrel and (ii) just after it has left the barrel (c) How many g’s of acceleration does the rifle give this bullet? (d) For how long a time is the bullet in the barrel?