Basic: Mach is a measurement of the speed of sound in air. Therefore, mach6 is six times the speed of sound in air.
761.2 * 6 = 4,567.2 mile/hour (mph)
More in depth:
"Mach" is a relative measurement of speed and fluid temperature.
Here are some examples of Mach 6:
CAS = Calibrated Air Speed. The speed which a instrument in the plane would show.
TAS = True Air Speed. The actual speed of the object relative to the medium it is traveling in.
Mach 3.6 = 2,740.34 mph
Mach 10 is equal to 7,612.71 miles per hour (mph) at standard atmospheric conditions.
It depends on air pressure and temperature, or altitude. On a sea level it will be around 9120 mph, on 36000ft it will be 7900 mph.
This is the rough formula. Mach = velocity/speed of sound This is rough because conditions are truly variable, but............ 79 Mach = velocity/768 mph = ~606070 miles per hour
Mach 9.6 is approximately 11,700 kilometers per hour or about 7,300 miles per hour. It is nearly 9.6 times the speed of sound in air at sea level.
Mach 0.8-1.0
Mach 1.7 is equal to about 1294 mph.
Mach 6 is about 4,449.3 mph
645.38104_MPH_">645.38104 MPH-is 0.87 Mach -
Machnesium (element #67).
the SR 71 goes really fast it goes Mach 7 NOT Mach 3.
Mach 3.3 is about 2,512 mph depending on altitude.
Mach 889 is about 659,233 mph
mach 2.03
1,750.8 mph
Mach 6 is about 4,567 mph
Mach 0.7 is 533 mi/h (rounded)