Question

Define relative velocity. deduce an expression for relative velocity of one object w r t another in terms of their velocities relative to earth

Answer 1

Definition of relative velocity. : the vector difference between the velocities of two bodies : the velocity of a body with respect to another regarded as being at rest — compare relative motion.

Answer 2

Answer:

We encounter occasions where one or more objects move in a frame which is non-stationary with respect to another observer. For example, a boat crosses a river that is flowing at some rate or an aeroplane encountering wind during its motion.It is known as relative velocity.