The net work done on an object may be determined by a combination of kinematics and dynamics or by the work-kinetic energy theorem. In this problem, we will first use kinematics and dynamics to determine the net work done on an object [parts (a), (b), and (c)], then we will use the work-kinetic energy theorem [part (d) and (e)] to again determine the net work done on the object. A bullet with a mass of 14.5 g is accelerated along the length of a 73.2 cm long rifle barrel from rest to a speed of 821 m/s. Determine the following.

a) the magnitude of the acceleration of the bullet as it travels along the rifle barrel (Assume the acceleration of the bullet is constant.) km/s^2
b) the magnitude of the net force acting on the bullet as it travels along the rifle barrel kN
c) net work of the bullet done as it travels along the rifle barrel kJ
d) kinetic energy of the bullet as it exits the rifle barrel kJ
e) Use the work-kinetic energy theorem to find the net work done on the bullet. kJ
f) From the preceding work, we may conclude that the net work done on an object may be determined from which of the following?
a combination of kinematics and dynamics
the work-kinetic energy theorem
both of these