Force and Laws of Motion

Force and Laws of Motion

Two forces resulting from the interaction between two objects are called action and reaction forces respectively.

Action and reaction forces act on two different bodies but they are equal in magnitude.

Newton’s third law: For every action there is an equal and opposite reaction; but action and reaction acts on different bodies.

Law of conservation of momentum: The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them.

The velocity with which gun moves in the backward direction is known as the recoil velocity. 



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