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Homework Help: Kinematics problem, don't know how to find unknown variables

  1. Sep 9, 2012 #1
    1. The problem statement, all variables and given/known data
    A rocket is shot straight up with an initial speed at 500 m/s.

    2. Relevant equations
    The equations the teacher went over beforehand were

    Yf = 1/2 A(T)^2 + Vi(T) + Yi
    Vf = A(T) + Vi

    3. The attempt at a solution
    So far I have

    Vf = (-9.8)(T) + 500 m/s
    Yf = 4.9T2 + 500T + 0

    ...and I have no idea how to go about solving for the rest of the unknown variables. It seems like I need T somehow, but I don't know how I can get it from the information given.
  2. jcsd
  3. Sep 9, 2012 #2
    What is the question?
  4. Sep 9, 2012 #3
    Oh, sorry. Guess I didn't make that clear. You basically just have to find all the variables in the equations.
  5. Sep 9, 2012 #4
    I still do not know what is the question.
    If you have a rocket with velocity of 500m/s, you can be anywhere in this universe.
    Maybe on any planet.
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