The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 {\rm mm} long. The bullets leave this barrel with a muzzle velocity of 348 m/s. What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in m/s^2. What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in g's. For how long is the bullet in the barrel?