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How would i find the velocity of the ship relative to earth?

  1. Sep 6, 2016 #1
    1. The problem statement, all variables and given/known data
    A ship sets sail from Rotterdam, The Netherlands,
    heading due north at 7.00 m/s relative to the water. The local
    ocean current is 1.50 m/s in a direction 40.0º north of east.
    What is the velocity of the ship relative to the Earth?

    2. Relevant equations
    Vr=Vs-Vc r=relative s=ship c=ocean current

    3. The attempt at a solution
    I tried using the equation above but i noticed i needed to get a direction and that is where i am stuck.
  2. jcsd
  3. Sep 6, 2016 #2


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    Science Advisor

    Direction for what is the question? That may help you set up the problem.
  4. Sep 7, 2016 #3

    rude man

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    Homework Helper
    Gold Member

    Set up 2 vevtors & add.
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