Question

when a force is acting on a body which has equal and opposite reaction,then why should the body move at all?class 09 question

Answer 1

Even though the action and reaction are equal and opposite, the object moves because these force act on 2 different bodies. So an individual body experience 1 force only. Thus, these forces don't cancel eachother and the object moves. For every action, there is an equal and opposite reaction.