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Difference between Newton's 2nd Law/3rd Law of motion?

  1. Feb 4, 2016 #1
    1. The problem statement, all variables and given/known dat
    What is the difference between Newton's 2nd and 3rd law of motion? Are they related as in if I applied force so that an object accelerates, would it exert the same amount of force towards me?
    2. Relevant equations
    F=ma
     
  2. jcsd
  3. Feb 4, 2016 #2

    andrewkirk

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    Yes, they would.
     
  4. Feb 5, 2016 #3
    I can't differentiate which law (best choice) to put on a test, cause I'm confused about the 2nd law and 3rd.
    For instance, a rocket up in the air - would the best choice be law 2 or 3?
     
  5. Feb 5, 2016 #4

    andrewkirk

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    Both are needed for a rocket to fly. Which is the correct answer will depend on what the question is.
     
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