- #1
Shatzkinator
- 53
- 0
Homework Statement
Suppose a gangster sprays Superman's chest with 3 g bullets at the rate of 100 bullets/min, and the speed of each bullet is 500 m/s. Suppose too that the bullets rebound straight back with no change in speed. What is the magnitude of the average force on Superman's chest?
Homework Equations
J = FavgT
p = mv
J = pf - pi
The Attempt at a Solution
I don't really understand how to get the delta T. I got J = -3 Ns from equation 3, don't know where to go from there.