Physics I / Newton's Laws of Motion
Practice question · Match the pairs

Match each of Newton's laws to its key concept.

  • First law
  • Second law
  • Third law
  • Universal gravitation
  • F=Gm1m2/r2F = Gm_{1}m_{2}/r^{2}
  • Inertia
  • Action-reaction pairs
  • F=maF = ma
Hints
  1. Sort by whether the law concerns no force, some force, or a pair of forces.
  2. Only one law is about two bodies acting on each other.
Show the answer
  • First law Inertia
  • Second law F=maF = ma
  • Third law Action-reaction pairs
  • Universal gravitation F=Gm1m2/r2F = Gm_{1}m_{2}/r^{2}
Why

Newton formulated three laws of motion and the law of gravitation.

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