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Mach value64

  1. Jan 21, 2007 #1
    1. The problem statement, all variables and given/known data
    If the temperature is 12 degrees and a jet accelerates at rest at 12ms2 for 41s, then what is the Mach value for the jet at the end of 41 seconds

    2. Relevant equations
    speed of sound equation

    3. The attempt at a solution

  2. jcsd
  3. Jan 21, 2007 #2


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    Gold Member

    Your statement of the problem has numerous flaws. I assume the jet accelerates from rest, and that you meant "t=12degrees" above. Careful also to use acceleration units of meters per second^2, not m-s^2. Finally your value for v is incorrect.

    What is the equation giving velocity in terms of acceleration and time? Once you have that you'll need the speed of sound at 12 degrees to finish the problem...
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