w = m x g
wd = F x d
P = wd / t
F = m x a
a = v - u / t
v^2 = u^2 + 2 a s
P = m x v
change E = m x c x change Theta
E = m x l
v = f x lambda
GPE = m x g x h
KE = 1/2 x m x v^2
E = 1/2 k x e^2
F = k e
