I haven't touched a physics book in a few years but from what I can remember F = m*a p = m*v Ek = 1/2(m*v^2) Does F or E = mass times velocity squared? Is it derived? I do know E = m*c^2 and c is the speed of light (so you could substitue v, but I'm guessing that would be only for near light speeds) Hopefully someone can clear this up for me