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Vector difference help

  1. Feb 22, 2009 #1
    1. The problem statement, all variables and given/known data

    hi i am having problems with this problem

    Vector A has a magnitude of 8.00 units and makes an angle of 45.0 degrees with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A+B and (b) the vector difference A-B.


    2. Relevant equations
    A+B
    A-B

    3. The attempt at a solution
    Do i just use the graph to count?
    What about the difference vector?
     
  2. jcsd
  3. Feb 22, 2009 #2
    Re: Vectors

    Yes

    Same deal. Remember, vectors add head-to-tail.
     
  4. Feb 22, 2009 #3
    Re: Vectors

    What is the graphical method of adding two vectors? Subtracting one vector from the other is defined as simply adding the negative of the second vector to the first. Using a parallelogram made up of the vectors, you can see both of these operations.
     
  5. Feb 22, 2009 #4
    Re: Vectors

    thank you
     
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