Mach 6 is about 4,449.3 mph
Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed medium through which the body is traveling. It is said that the aircraft is flying at Mach 1 if its speed is equal to the speed of sound in air (which is 332 m/s or 1195 km/hr or 717 miles/hour.) An aircraft flying at Mach 2 is flying at twice the speed of sound in air, etc.Mach 1 = Speed of SoundSpeed of Sound = 332 m/s or 1195 km/hr or 717 miles/hour or 1,125 ft/s
Mach 9 would be approximately 9 times the speed of sound, or 6,192 miles per hour.
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
1,126 ft/s
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 -
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.
Mach 3.3 is about 2,512 mph depending on altitude.
889 mach is approximately 683,781.4 mph.
mach 2.03
Mach 0.7 is 533 mi/h (rounded)
1,750.8 mph
Mach 6 is about 4,567 mph