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Adding vectors given just the magnitude

  1. Nov 21, 2013 #1
    1. The problem statement, all variables and given/known data

    The problem is attached

    2. Relevant equations

    sqrt(a^2+b^2)

    3. The attempt at a solution
    I used the equations above to calculate the resultant but apparently it wasn't right.
     

    Attached Files:

  2. jcsd
  3. Nov 21, 2013 #2

    haruspex

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    It's a very poor question. Clearly some are equal, so there's no right way to fill those in. Others you cannot rank without making an estimate of the angle between the vectors from the diagram, so I suggest you do exactly that - get the protractor out. By eye, I'd say |B| > |A-B|, but it's a close call.
     
  4. Nov 21, 2013 #3
    But this was on a test so do you think we were suppose to estimate the angle between the two?
     
  5. Nov 21, 2013 #4

    haruspex

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    If you were not given the angle then I see no alternative.
     
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