Fluids

The Sound Barrier

If Mach 1 is the speed of sound, what is Mach 2?

Mach is the ratio of a velocity to the speed of sound, so Mach 2 is two times the speed of sound, Mach 3.5 is three and a half times the speed of sound, etc. Any velocity greater than Mach 1 is referred to as “supersonic.”



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