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Homework Help: Relative Velocity of an aircraft carrier

  1. Oct 11, 2007 #1
    1. The problem statement, all variables and given/known data


    3. The attempt at a solution

    Vch = Vce + Vhe Do I have this correct?

    I am guessing I need to find the velocity of the carrier with the respect to earth, and also find the velocity of the helicopter with respect to earth. Than with these two answers I can find the velocity of the carrier with respect to the helicopter. Do I have this correctly?
  2. jcsd
  3. Oct 11, 2007 #2


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    Homework Helper

    You're on the right track.
    Now try expressing [itex]\vec v_\mathrm{CE}[/itex] and [itex]\vec v_\mathrm{HE}[/itex] in terms of the given vectors.

    By the way, your image is a bit large. Next time, can you make it a bit smaller (so it at least fits on a standard size screen) or upload it as attachment?
  4. Oct 11, 2007 #3
    Here you go, I resized it. Sorry about that.

    Ok so how does this look?

    Vcw = Vce + Vwe which when numbers plugged in gives me 20 = Vce + 10. I ended up getting Vce = 17.3 m/h is that correct?

    Vhe = Vha + Vae which when numbers plugged in gives me Vhe = 40 + 30. I ended up getting Vhe = 50 m/h am i correct or way off?

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