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Velocity and Speed

  1. Nov 3, 2011 #1
    1. The problem statement, all variables and given/known data

    A boat is placed in a river, which has a current velocity, Vc of 3.0 km/h east, relative to the shore. Relative to the river, the rower can maintain a boat speed, Vb of 6.0 km/h.
    A) Draw a diagram that could be used to find the boat's velocity relative to the shore if the boat is being rowed downstream.
    B) Draw a diagram where the direction of the boats velocity is relative to the shore southeastward.

    2. Relevant equations


    3. The attempt at a solution
    A) I have a line going straight down, Vb and a 90 degree turn to the right, Vc.
    B) I know it's not right, but the same as above is what I thought.
  2. jcsd
  3. Nov 3, 2011 #2

    Chi Meson

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    Science Advisor
    Homework Helper

    Neither of your answers are correct.

    If the boat is being rowed down stream, that means the boats velocity relative to the water is in the same direction that the river is flowing. And "East" is usually the direction to the right on the page. Southeast will be in a 45 degree diagonal direction down-and-to-the-right.
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