Newton's Third Law

  1. Why forces acts on two different bodies with same magnitude and opposite in direction doesn't cancel each other?
     
  2. jcsd
  3. Doc Al

    Staff: Mentor

    Because each force acts on a different body. If two equal and opposite forces act on the same body, then they do cancel.
     
    1 person likes this.
  4. adjacent

    adjacent 1,533
    Gold Member

    This question is being asked very frequently. Is there any FAQ for this?
     
    1 person likes this.
  5. Shyan

    Shyan 1,803
    Gold Member

    Let me give you an example. You and your friend are standing at opposite sides of a billiard table facing each other. Then you hit two balls simultaneously with equal and opposite forces. Do you expect that the two balls don't move?
     
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