A 130-g bullet is fired from a rifle having a barrel 0654 m

Question

Compute all parts of following problem:

Problem: A 130-g bullet is fired from a rifle having a barrel 0.654 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in Newton's) exerted by the expanding gas on the bullet is 16050 + 9100x - 26000x², where x is in meters.

Part A: Determine the work done by the gas on the bullet as the bullet travels the length of the barrel?

kJ

Part B: If the barrel is 0.90 m long, how much work is done?

kJ

Part C: How does this value compare with the work calculated in part (a)?

Percent difference = %

Please use great detail in explaining the solution. Thanks.