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What is the displacement of the wrench?

  1. Apr 21, 2008 #1
    1. The problem statement, all variables and given/known data
    a worker drops a wrench from top of building under construction. if g =9.8N/kg [down], after 7 seconds, what is the displacement of the wrench?


    2. Relevant equations



    3. The attempt at a solution

    i dont know the formula, totally lost
     
  2. jcsd
  3. Apr 21, 2008 #2
    What is the physical interpretation of g? Does g ever change during the fall? After answering those questions, you should be able to see if any of your four kinematic equations can help you. Let us know if you need any more help.
     
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