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!

Homework Help: Simple Vector Question

  1. Jan 16, 2009 #1
    1. In the question

    1/2B X (1/2A + 1/2C)

    Where B and A and C are all vectors what would I do first.

    I know first the brackets, 1/2A + 1/2C = another vector

    now do I do 1/2*B then cross the answer with the vector. OR do I cross B with the vector then multiply the answer by the scalar 1/2?

    THANKS
     
  2. jcsd
  3. Jan 16, 2009 #2
    nevermind i just tried it and i get the same answer either way so its ok :D
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook