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: Vector Problems

  1. Feb 4, 2010 #1
    Hi i need help with some online homework but i cant seem to get the right answer.
    Vector A has a magnitude of 70 units and points due west, while vector B has the same magnitude and points due south. Find the magnitude and direction of (a) A + B and (b) A - B . Specify the directions relative to due west.

    for part a) i got mag = 99 with angle of 45 degreees south of west and b) same thing but north of west am i doing something wrong?
    Last edited: Feb 4, 2010
  2. jcsd
  3. Feb 5, 2010 #2


    User Avatar
    Homework Helper

    Are you getting both a) and b) wrong, or just b)? You are likely not specifying the angle properly from the due west direction.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook