Class 11 Physics Laws of Motion Newtons Third Law

Newton’s Third Law

To every action, there is always an equal and opposite reaction.

For example, when you hold the ball, a force acts on the ball (Action), and an equal and opposite force acts on your hand (Reaction).


  • Action & Reaction forces always act on different bodies
    • FAB = FBA
    • FAB: Force acting on A by B
    • FBA: Force acting on B by A
  • Action & Reaction forces occur at the same instant

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