A father (m = 86 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast will the father be moving?
P=mv ( mass x velocity)
P=(m1 + m2) v
The Attempt at a Solution
(45+86) 3= 393. I have tried many different things and can't seem to come up with the answer.