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Negative time and positive time

  1. Sep 9, 2009 #1
    how do i find at what negative time and positive time does the particle pass throught the origin?
     
  2. jcsd
  3. Sep 9, 2009 #2

    rock.freak667

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    Homework Helper

    Re: x=4.0-6.0t^2

    At the origin x=0 and t=0. It seems you want to find when x=0, ( I assume x=displacement)

    So just put 4.0-6.0t2=0 , then make t2 the subject and take the square root of that number. You're answer will then be t=±√(number)
     
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