Question

If 18,600 J of work is done to shoot he human cannonball down a 4.25 m barrel, then how much force is applied to the person to fire them out of he cannon?

Answer 1

We will have the following:

$18600J=F\cdot4.25m\Rightarrow m=\frac{18600J}{4.25m}$$\Rightarrow F=\frac{14400}{17}N\Rightarrow F\approx4376.47N$

So, the force applied is 14400/17 N, that is approximately 4376.47 N.