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Homework Help: Vector and distance

  1. Jan 25, 2007 #1
    Hello, having a little trouble on an intro to physics homework problem.

    1. The problem statement, all variables and given/known data

    Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1050 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north for 2000 m and then turns and heads directly toward the campground.


    2. Relevant equations
    Pythagorean theorem?



    3. The attempt at a solution
    I tried using the theorem (used 2000 m as C^2 and 1050 m as A^2 since that is the distance that the first biker traveled), doesn't seem to work out.
    I found out that the magnitude for the first biker is 1776? I believe that has to have some relevance to solving this problem.

    Thanks for the help.
     
  2. jcsd
  3. Jan 25, 2007 #2

    radou

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    What exactly is the question of the assignment?
     
  4. Jan 25, 2007 #3

    cristo

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    Ok, ignore this.. I guessed (probably wrongly) what the question was!
     
  5. Jan 25, 2007 #4
    oh stupid me..lol

    the question is

    At the turning point, how far is the second cyclist from the campground?

    i guess if i can somehow figure the first one out i can figure the second part which is...

    What direction (measured relative to due east) must the second cyclist head during the last part of the trip?
     
  6. Jan 25, 2007 #5

    radou

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    All you have to do is draw a 'trapezoidal' sketch and remember what a smart old greek said.
     
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