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Physic proplem ,please check

  1. Sep 11, 2004 #1
    hi everyone

    please check if i was wrong. And I dont know how to find dx and dx and its magnitude, anyone have any idea? thanks

    here the question http://viethost4u.com/toan/physic1.GIF [Broken]

    and here is my answer http://viethost4u.com/toan/answer.GIF [Broken]
     
    Last edited by a moderator: May 1, 2017
  2. jcsd
  3. Sep 11, 2004 #2

    HallsofIvy

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    Staff Emeritus
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    In calculating OA, you established that the positive x-axis was east and the positive y-axis is north. That means that any movement to the west or south is negative.
     
  4. Sep 11, 2004 #3
    i dont get it ,can you explain which one i did wrong ?thanks
     
  5. Sep 12, 2004 #4
    i got dx= -181.6 dy= 72, you was right, i have change bx= -400 and cy -188

    please check if i 'm wrong

    http://viethost4u.com/toan/answer.GIF [Broken]
     
    Last edited by a moderator: May 1, 2017
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