What is meant by motion of bodies?

Friction is defined as the force which opposes the relative motion between two surfaces in contact. What is meant by banking of roads?

Explain what is meant by momentum of a body. Is it a scalar or a vector? What are its units?

What is meant by motion ? What causes a change in motion ?

What is meant by rotatory motion ?

What is meant by charging a body ?

What is meant by uniform motion ? Give an example.

What is meant by charging a body ? Describe charging by conduction and charging by induction.