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Magnitude of vectors

  1. Feb 1, 2007 #1
    1. The problem statement, all variables and given/known data
    If Vx = 6.80 units and vy = -7.40 units, determine the magnitude and direction of V-> (vector, the arrow is above the V).

    2. Relevant equations and 3. The attempt at a solution
    Should we use the following:
    V magnitude = √ ( Vx^2 + Vy ^2) = √ (6.80^2 + (-7.40)^2) = 10 units
    and for the direction: tan θ = Vy/Vx = (-7.40)/6.80 = -1.1
    θ= -47.4 degrees below the x axis.

    Would this be correct?

    Thanks!
     
  2. jcsd
  3. Feb 1, 2007 #2

    berkeman

    User Avatar

    Staff: Mentor

    Looks correct to me.
     
  4. Feb 2, 2007 #3
    Thanks a lot!
     
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