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VECTORS homework

  1. Aug 11, 2015 #1
    1. The problem statement, all variables and given/known data
    A car travels north with a velocity of 5.2-m/s for 92-seconds. It then turns east, and with the same speed travels for a further 22-seconds. Calculate the magnitude of the final displacement of the car.

    Now give the direction of the final displacement of the car. Give your answer in degrees North of East.





    2. Relevant equations
    pythargaros

    3. The attempt at a solution
    Hi i have calculated the magnitude (492m) by doing 5.2 x 92 and 5.2 x 22 and using pythagaros

    For the 2nd part (direction in degrees). I did tan^-1(114.2/478.4) and got 13 degrees. this was wrong
     
  2. jcsd
  3. Aug 11, 2015 #2

    BvU

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    Hello Zbrah, welcome to PF :smile: !

    13 degrees North of East ?
     
  4. Aug 11, 2015 #3
    I wrote that in my answers, but it was wrong :(
     
  5. Aug 11, 2015 #4

    BvU

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    Make a little drawing. You'll immediately see the difference between 13 degrees North of East and 13 degrees East of North....
     
    Last edited: Aug 11, 2015
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