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How fast is mach 20?

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Answer:

Mach 20= 15,200 miles per hour.

Mach numbers are determined by the speed of the object divided by the speed of sound.

The speed of sound is approx. 760 miles/hour - a Mach 1 number would be the speed of the object (760 mph) divided by the speed of sound (760 mph) = 1

Mach 20 would be 20 times the speed of sound (760 mph) = 15,200 mph.

It is absurd to think that the government just lost an aircraft flying at the speed of 700 billion mph!

Contributor:

Fallon

First answer by ID1370657731. Last edit by Dagart. Contributor trust: 0 [recommend contributor ]. Question popularity: 129 [recommend question].

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