Question

in a human cannonball a person is shot from a cannon with a barrel that is 3.05 m long. 16700 J of work are done to accelerate the acrobat out of the cannon. what is the force exerted on the acrobat

Answer 1

The work done to accelerate the acrobat is given by
$W=Fd$
where F is the force applied and d the distance of application of the force.
If the barrel is 3.05 m long, then d=3.05 m. Therefore we can find the force:
$F= \frac{W}{d} = \frac{17600 J}{3.05 m} =5475 N$