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Homework Help: What is the velocity of the passenger relative to the water?

  1. Sep 29, 2005 #1
    A passenger on a boat moving at 1.13 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s, Fig. 3-44. The stairs are angled at 45° pointing in the direction of motion as shown. What is the velocity of the passenger relative to the water? :cry:
    I have to get the magnitude of it and I get -123 which isfor sure not right
    I also have to get the direction in degrees---- how do I do that.
    My teacher hasn't taught us all of this yet!
     
  2. jcsd
  3. Sep 29, 2005 #2

    hotvette

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    Homework Helper

    It's best to draw a picture showing the velocity vectors. This is vector addition.
     
  4. Sep 29, 2005 #3

    Doc Al

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    Staff: Mentor

    [tex]\vec{V}_{person/water} = \vec{V}_{person/boat} + \vec{V}_{boat/water}[/tex]

    Hint: express the velocity vectors in terms of vertical and horizontal components.
     
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