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Mach Number 2

  • Thread starter soulja101
  • Start date
  • #1
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Homework Statement


A military airplane can travel at mach 2.00 What is the speed in km/h at sea level and at 0 degress

Homework Equations


mach number=speed of object/speed of sound

The Attempt at a Solution


speed of object=speed of sound divided by mach number
322meters per second/2.00
=166m/s thats answer i got for the 0 degrees but its wrong because the answer is supposed 2390km/h i dont know how to get the sea level one.
 

Answers and Replies

  • #2
The speed of sound changes with density. It travels faster under water for instance.
 
  • #3
62
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wat do u mean

so i can get the answer i dont think the teacher wanted us to the density thing, is there another way of doing this
 
  • #4
D H
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mach number=speed of object/speed of sound
Correct.

speed of object=speed of sound divided by mach number
Try again. If the speed limit sign says "30 miles per hour" and the officer says "I just clocked you at twice the posted limit", does that mean you were going 15 mph or 60?
 
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