What is Newton's third law?

Whenever two objects interact, they exert equal and opposite forces on each other.

Answer in your head, out loud, or on paper, then tap the card to flip.

When pushing against a wall, the wall pushes back with an equal and opposite force.


What is this force called?

There are a few different names you'll see used:


  1. Normal contact force.
  2. Normal force.
  3. Normal reaction force.

Answer in your head, out loud, or on paper, then tap the card to flip.