Question

A 30-gram bullet leaves a gun barrel with a speed of 230 m/s. (a) What work is done on the bullet while it is in the gun barrel? (b) If the gun is 0.60m long, what is the average force on the bullet?

Answer 1

work = 1/2 m v^2
Vf^2=1/2 a * distance, where acceleration a= force/mass, solve for force.

Answer 2

a)W = KE = 1/2 mv^2
b)F = W/d