mach 1 000 000 is one million times greater than the speed of sound (340m/s)
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.
Mach 1.3 is 1.3 times the speed of sound, which is approximately 1,570 kilometers per hour (975 miles per hour) at sea level. So, Mach 1.3 would be around 2,041 kilometers per hour (1,269 miles per hour).
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 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
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
Mach 0.7 is 533 mi/h (rounded)
1,750.8 mph
Mach 6 is about 4,567 mph
Opus Mach 1000 trucks are low end trucks found on "department store" quality skateboards.