Question

whatis relative motion give one example and explain

Answer 1

Relative motion is the calculation of the motion of an object with regard to some other moving object. Thus, the motion is not calculated with reference to the earth, but is the velocity of the object in reference to the other moving object as if it were in a static state.
The laws of physics which apply when you are at rest on the earth also apply when you are in any reference frame which is moving at a constant velocity with respect to the earth. For example, you can toss and catch a ball in a moving bus if the motion is in a straight line at constant speed.

Answer 2

if you are in a bus and it goes with the velocity of 50 m/s to the east, then a truck passes you with a velocity of 60m/s to the east. When the truck is next to the bus you feel that as you go backward to the west or when the two cars have same velocity when you look another car you feel you do not move. On the contrary, consider the below examples, if you look at the stationary objects at the ground when you travel, then you feel yourself travel with the velocity of the car. All these are the result of relative motion. Velocity of the moving objects with respect to other moving or stationary object is called “relative velocity” hope u understood