F=ma
a=F/m

I hit the ground with a velocity on the y axis of 50 m/s. Accelerating simply with gravity (9.81)
Newtons third law, any force has an equal opposing force. So I hit the ground going 50m/s, for some basic bouncing (very basic) shouldn't I be able to take the current velocity, acceleration and somehow determine the new force to push upward.