| 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 |