posted by Kirbi .
A person of mass 83.8 kg escapes from a burn- ing building by jumping from a window situ- ated 25 m above a catching net.
The acceleration of gravity is 9.8 m/s2 .
If air resistance exerts a force of 109.1 N on him as he falls, determine his speed just before he hits the net.
Answer in units of m/s