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Pytels Dynamics 12.40: The rocket sled is propelled...

  1. Aug 6, 2017 #1
    1. The problem statement, all variables and given/known data
    The 13-kN rocket sled is propelled along a straight test track. The rocket engine fires for 4 seconds,
    producing a propulsive force of F=5.3kN, and then shuts down. Assuming that the sled starts from rest and that the coefficient of kinetic friction is 0.05, determine the maximum speed reached by the sled.

    2. Relevant equations


    3. The attempt at a solution
    Here is my solution:

    Pytel_Dynamics041.jpg

    Is this correct? (I get the same answer at the back of the book)
     
  2. jcsd
  3. Aug 6, 2017 #2

    haruspex

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    Looks good.
     
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