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I really need help deriving the equation for this?

  1. Jun 5, 2013 #1
    1. The problem statement, all variables and given/known data
    My professor wants to see how to derive the formula. Basically get from the first two lines in the bracket to the two lines that are boxed.

    2. Relevant equations
    I have attached the picture of the relevant equations
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Jun 5, 2013 #2
    Start out by getting all the A terms in each of the equations on one side of the equation, and all the B terms on the other side of the equation. Then, divide the resulting kinetic energy balance equation by the resulting momentum balance equation.
     
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