1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Newton's third law is not correct

  1. Jun 19, 2015 #1
    Newton's Third Law concerns the forces of interaction between two bodies.
    Which of the following statements relating to the third law is not correct ?

    A. The two forces must be of same type
    B. The two forces must act on different bodies.
    C. The two forces are always opposite in direction
    D. The two forces are at all times equal in magnitude.
    E. The two forces are equal and opposite so the bodies are in equilibrium

    Ans is D but why can't be A or B ?
  2. jcsd
  3. Jun 19, 2015 #2
    MUST THE FORCES are of same type?
  4. Jun 19, 2015 #3


    User Avatar
    Science Advisor

    Who said that the proper response is D?

    Can you explain to us the third law in your own words?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - Newton's third correct Date
Newton's Third Law: Acceleration of box and worker Dec 8, 2017
Problem applying Newtons third law Apr 10, 2017