You can think of the work−kinetic energy theorem as a second theory of motion, parallel to Newton's laws in describing how outside influences affect the motion of an object. In this problem, solve parts (a), (b), and (c) separately from parts (d) and (e) so you can compare the predictions of the two theories. A 14.8-g bullet is accelerated from rest to a speed of 856 m/s in a rifle barrel of length 76.0 cm.

(c) Use the result to part (b) to find the magnitude of the average net force that acted on the bullet while it was in the barrel.
__________ kN