a pistol fires a 3-g bullet with a speed of 400 m/s. the pistol barrel is 13 cm long.(a) how much energy is given to the bullet? (b) what average force acted on the bullet while it was moving down the barrel? (c) was this force equal in magnitude to the force of the expanding gases on the bullet?
The Attempt at a Solution
i have solved a and b. i don't really know how to explain c, does it have anything to do with Newton's third law