Which of the following makes use of Newton’s third law of motion?

2023

Which of the following makes use of Newton’s third law of motion?

  1. A.

    Archery

  2. B.

    Space rocket

  3. C.

    Venturimeter

  4. D.

    More than one of the above

  5. E.

    None of the above

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Correct answer: B

Newton's third law states that for every action, there is an equal and opposite reaction. A space rocket operates on this principle as it expels exhaust gases downward (action), generating an upward thrust (reaction) that propels the rocket forward. Archery involves elastic potential energy and projectile motion, not Newton's third law directly. A Venturimeter measures fluid flow using Bernoulli’s principle, unrelated to action-reaction pairs. Therefore, only the space rocket clearly applies Newton's third law.

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