Symbols

Symbol	Name	Description
a	Alpha	Often used to represent an angle
D	Delta	Means "change in"
e	Epsilon	Coefficient of restitution
f '( t )		The derivative of function f with respect to t
m	Mu	Coefficient of friction
w	Omega	Used here to represent angular velocity
p	Pi	Constant 3.14
q	Theta	Often used to represent an angle