There is a formula :
Force = Density * Area * Speed^2
I get how we get from f=ma to:
F=(mv-mu)/t
F=(m(change in velocity))/t
F=(m/t)*(change in velocity)
F=((Density*volume)*(change in velocity))/time
But then from the last listed equation how do we get to
Force = Density * Area * Speed^2