On a movie set, a stuntman will jump out of a 3rd story window and fall straight down to a stunt air bag designed to cushion his fall. The airbag will apply a constant force slowing the stuntman down. Your goal is to figure out whether the size of the airbag is sufficient.

This should be done using energy conservation and work

The stuntman (mass 60 kg) will jump from 20 m above the ground and the 2.0 m tall stunt airbag will exert a constant force of 2,500 N on him.

Is the size of the airbag sufficient?