State Newton's third law of motion and give two examples to illustrate the law.
According to the newton's third law of motion, whenever one body exerts a force on another body, the second body exerts an equal and opposite force on the first body. In other words, to every action, there is an equal and opposite reaction.
Two examples to illustrate this law-When a man jumps out from a boat,the boat moves backwards.This is due to the fact that to step out of the boat, the man presses the boat with his foot in the backward direction.The push of the man on the boat is not fixed and is floating, it moves backwards due to the action force exerted by the man.
Gunman gets a jerk on firing a bullet from his gun.This is because when a bullet is fired from a gun, the force sending the bullet forward is equal to the force sending the gun backwards but due to high mass of the gun, it moves only a little distance backwards giving a jerk to the gunman.