Mach number is dependent on a number of factors. Factors such as air density or altitude will change the Mach number.
At approximatively 45 000 ft Mach 0.85 =289.2361 m/s = 1041.25 km/h = 647.0028 mph
Mach 6 is about 4,449.3 mph
Mach 9 would be approximately 9 times the speed of sound, or 6,192 miles per hour.
1,126 ft/s
Mach velocities are all relative to the speed of sound in that gas, at that density. Mach 1 = the speed of sound. Mach 2 = twice the speed of sound. It does not have an invariant conversion into miles per minute.
The north American x-15 travels at mach 6.72
Mach 0.8-1.0
Mach 1.7 is equal to about 1294 mph.
645.38104_MPH_">645.38104 MPH-is 0.87 Mach -
Mach 6 is about 4,449.3 mph
Mach 1 is about 762 mph, so mach 20 is about 15,240mph.
the SR 71 goes really fast it goes Mach 7 NOT Mach 3.
889 mach is approximately 683,781.4 mph.
Mach 3.3 is about 2,512 mph depending on altitude.
mach 2.03
Mach 0.7 is 533 mi/h (rounded)
1,750.8 mph
Mach ten is equal to 7,612 miles per hour.