1. Nov 27, 2011 #1

   warfreak131

   

   If I have a negative quantity pointing in the positive z direction, is that the same as a positive quantity pointing in the negative z direction?
   
   e.g.
   
   does [itex]-A\hat{z}=A\hat{-z}[/itex]?

    

   warfreak131, Nov 27, 2011
2. 
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3. Nov 27, 2011 #2

   nucl34rgg

   

   yes they are the same

    

   nucl34rgg, Nov 27, 2011
4. Nov 27, 2011 #3

   Dr_Morbius

   

   Vectors do not have negative magnitudes.
   
   http://en.wikipedia.org/wiki/Magnitude_(vector)

    

   Dr_Morbius, Nov 27, 2011

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