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Homework Help: Stones thrown from different heights

  1. Oct 12, 2011 #1
    1. The problem statement, all variables and given/known data
    Two stones are thrown from different heights and at different times. While they are still in flight ,find the functional form of the vertical distance between them as a function of time


    2. Relevant equations

    ??? How do you do this, there are no numbers given Im very confused ...
     
  2. jcsd
  3. Oct 12, 2011 #2

    256bits

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    Gold Member

    Really, it is not all that difficult.
    You do not need number values.
    In fact when a system is first being analyzed or designed nobody has any numbers. It is best to first find out what is important, and that is what this problem is about.

    stone 1 ( or a , or zamba or whatever you want to call it )
    Initial velocity v1
    initial height h1
    initial time t1
    acceleration a = g ( gravity )

    Now using these values, and an equation of rectiliner motion, you can find stone1 position.

    Stone 2
    Initial velocity v2
    initial height h2
    initial time t2
    acceleration a = g ( gravity )

    Now using these values, and an equation of rectiliner motion, you can find stone2 position.

    Then, I leave it up to you to figure out what the question asks "While they are still in flight ,find the functional form of the vertical distance between them as a function of time".
     
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