Dimensional formula for coefficient of restitution

Suppose the dimensional formula for acceleration, velocity length are alpha beta^(-2), alphabeta^(-1) and alpha gamma . Then the dimensional formula for the coefficient of friction is

The dimensional formula for coefficient of self induction is

Which one of the following gives the dimensional formula of coefficient of friction?

Define coefficient of restitution

What is coefficient of restitution ?

The dimensional formula for coefficient of viscosity

Dimensional formula of coefficient of viscosity is