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!

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Mach 1 is about 762 mph, so mach 20 is about 15,240mph.

mach 2.25

mach 7 is 3850

Mach 20 is about 15,224 mph

Yes

Mach 19 is 14,462.934 mph

Mach 40 is 30,400 MPH and mach 1 is about 760 MPH

Mach 0.885 = about 656.3 mph

Mach 889 is about 659,233 mph

Mach 2.5 = 1,903 mph

Mach 4 = about 2,966.2 mph

Mach 1.7 is equal to about 1294 mph.

Mach 1.6 = about 1,186.5 mph

Mach 1.8 = about 1,334.8 mph

Mach 2.34 = about 1,781.2 mph

Mach 3 is 2283.6211 mph

Mach 6 is about 4,449.3 mph

645.38104_MPH_">645.38104 MPH-is 0.87 Mach -

Mach 3.6 = 2,740.34 mph

Mach 82 is 62,418.9782 mph

Mach 80 = 60,896.6 mph

mach 25 = 19030.18 mph

Mach 26 = 19,791.4 mph

Mach 1000 is equal to 0.06 Lightspeed.

Mach 2.37 is 1804 mph.