A 85-g bullet is fired from a rifle having a barrel 0. 612 m long. Choose the or

Question

A 85-g bullet is fired from a rifle having a barrel 0. 612 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 13650 + 9900x - 26500X2, where x is in meters. Determine the work done by the gas on the bullet as the bullet travels the length of the barrel. kJ If the barrel is 1. 10 m long, how much work is done? kJ How does this value compare with the work calculated in part (a)? percent difference = %

Explanation / Answer

a)8.18KJ b)9.24KJ c) 11.47%

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