• Newton’s Third Law of Motion

    This law states that for every action there is an equal and opposite reaction. Therefore, if one object exerts a force on another object, the second object exerts an equal and oppositely directed force on the first one.

    There are other very important concepts that we come across in our day-to-day life. Understanding these concepts will give you much better insights and its various implications. Let’s take a look at some of these important concepts.



    Recoil of gun: When bullet is fired from a gun, the bullet also pushes the gun in opposite direction, with equal magnitude of force. This results in gunman feeling a backward push from the butt of gun.

    Rocket propulsion: When rocket moves in the space it pushes the gas outside from it, i.e., rocket applies force on the gases in the backward direction. As a reaction, the gases put equal amount of force on the rocket in the opposite direction and the rocket moves in the forward direction.

    Walking of a person: A person is able to walk because of the Newton’s Third Law of Motion. During walking, a person pushes the ground in backward direction and in the reaction the ground also pushes the person with equal magnitude of force but in opposite direction. This enables him to move in forward direction against the push.

    Propulsion of a boat: Sailor pushes water with oar in backward direction; resulting water pushing the oar in forward direction. Consequently, the boat is pushed in forward direction. Force applied by oar and water are of equal magnitude but in opposite directions.