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: Adding Horizontal Vectors Graphically

  1. Sep 9, 2009 #1
    1. The problem statement, all variables and given/known data
    I am asked to add two horizontal vectors graphically. The result being the Cvector:
    Cvector= Avector + 2*Bvector

    2. Relevant equations
    Avector has a length of 4 in the east direction.
    Bvector length 1 in the west director.

    2*Bvector= length 2

    3. The attempt at a solution
    Cvector has a length of 6. I know that. But while drawing them graphically, I end up drawing Avector - 2*B vector instead of adding both vectors.

    How can I show the addition of both horizontal vectors?
  2. jcsd
  3. Sep 10, 2009 #2
    Hi Lemniscate

    I don't think vector C has a length of 6. Assume that the positive direction is the east direction, so we have vector A = 4 and vector B = -1. Adding them will end up as subtraction.
  4. Sep 10, 2009 #3
    Hm. I see what you're saying.
    In my problem, the length of vector C is 2.

    Thank you, songoku!
  5. Sep 10, 2009 #4
    You're welcome ! :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook