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Homework Help: Sonic Boom problem

  1. Apr 26, 2010 #1
    1. The problem statement, all variables and given/known data

    A supersonic aircraft is flying parallel to the
    ground. When the aircraft is directly over-
    head, an observer sees a rocket fired from the
    aircraft. 9.28 s later the observer hears the
    sonic boom, followed 3.61 s later by the sound
    of the rocket engine.
    What is the Mach number of the aircraft?

    2. Relevant equations

    Vplane = Machplanevsound

    And that's all I really know...

    3. The attempt at a solution

    I'm standed on this one. The homework was covering soundwaves but he didn't talk about sonic waves for more than 3 minutes in class, and the textbook is really really non-descriptive. Any jumpstarts you guys can give me would be great, but I don't see how you're supposed to get anywhere with just two time variables.

    Thanks alot for the patience!
  2. jcsd
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