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Homework Help: Distance, vector quantities

  1. Jul 7, 2009 #1
    1. In still water, a student can swim at 1.2 m/s. She swims perpendicularly across a 40 m wide river, landing 30 m downstream. In crossing the river, what distance does the student move?

    2. d=df-di, cosine, sine, tangent

    3. Again, i tried drawing out a picture. I made 40m the x axis, and 30m the y axis. Am i trying to solve for the hypoteneuse? Also, what am i suppossed to do with the 1.2m/s. is it just there to try and mess me up? or is it important for the question?
  2. jcsd
  3. Jul 7, 2009 #2


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    Homework Helper

    Please don't type in bold face; it is difficult (for me) to read.

    That's what I would do.

    Data sufficiency.
  4. Jul 7, 2009 #3
    sorry. i will remember that for next time.

    and ok! thank you. i figured it out
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