Define relative velocity?

Define relative error.

Define elastic collision. Show thaat in an elastic collision, relative velocity of approach before collision is equal to relative velocity of separation after collisions.

What do you understand by relative velocity?

A body A is going frm south to north and body B is going from west to east .then the directin of relative velocity of A with respect to B is :

Pick out the two scalar quantities in the following list : force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, relative velocity.