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The camper's Travel

  1. Nov 28, 2011 #1
    1. The problem statement, all variables and given/known data
    T camper went 80m in the direction of 30°. He then turned and traveled 110m in the direction of 160°. Finally, the camper walked 42m at 195°. What was the camper's displacemnt
    2. Relevant equations
    sqrt{Rx^2+Ry^2}


    3. The attempt at a solution
    Rx
    80cos30
    110cos160
    190cos45
    Rx=110.83

    Ry
    80sin30
    110sin160
    195sin42
    Ry=210.10

    (sq. root of (110.83^2+208.1^2))=235.77m
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 29, 2011 #2

    BruceW

    User Avatar
    Homework Helper

    You have the right method. But You've got the third section of his travel wrong. It was 42m at 195 degrees, but you've used something different in your answer.
     
  4. Nov 29, 2011 #3
    thnxs i didn't realize that i made a mistake. i thought i was doing something wrong.
     
  5. Nov 29, 2011 #4
    How do you do the square root of a negative? i'm assuming you just make it positive but i'm not sure.
     
  6. Nov 30, 2011 #5

    BruceW

    User Avatar
    Homework Helper

    why do you want to square root a negative number? That shouldn't happen in this question.

    Do you mean what is a negative number squared?
     
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