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2 dimentional motion

  1. Sep 26, 2006 #1
    A boat crosses a river of width 134m in which the current has a uniform speed of 1.24m/s. The pilot maintains a bearing (i.e. the direction in which the boat points) perpendicular to the river and a throttle setting to give a constant speed of 2.62m/s relative to the water.

    What is the magnitude of the speed of the boat relative to a stationary shore observer? anser in units of m/s


    ok.......... if anyone can give me a clue on where to start i would love it!

    ~thanks
     
  2. jcsd
  3. Sep 27, 2006 #2

    berkeman

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    Staff: Mentor

    Can you draw a vector diagram showing the velocity vector of the boat with respect to the water, and the vector for the velocity of the water? What do you do with these vectors to get the answer?
     
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