Mach 0.82 equates to about 624.2 mph
Waldo Ledner
Wiki User
β 14y agoThe speed of sound varies depending on many factors. It is roughly 768 mph in dry air. Mach 1 is this speed under same conditions. So, .785 Mach would be 768 times 0.785, or 78.5% of 768 miles and hour. Roughly 603 mph at ground level in dry air and STP.
Wiki User
β 10y agoThe speed of sound is different at various altitudes.
At sea level altitude, i.e. right beside any beach, Mach 0.7 is 563 mph.
At an altitude of 35,000 ft, which is a typical cruise altitude of a Boeing 747, Mach 0.7 is equivalent to 463 mph.
Wiki User
β 11y agoJust subsonic in air.
Perhaps at 630 mph.
Mach = Velocity/Velocity of sound in medium
Mach 0.785 is equal to approximately 600 mph.
Wiki User
β 13y agoMach 0.885 = about 656.3 mph
Wiki User
β 11y agoMach 0.77 is 586.13 mph
Wiki User
β 11y agoMach 0.81 = 992.3 km/h
Wiki User
β 10y ago7.65 MPH= Mach 0.01
Wiki User
β 8y agoMach 0.72 is about 552.4 mph
Mach 6 is about 4,449.3 mph
1,750.8 mph
889 mach is approximately 683,781.4 mph.
Mach 1 is about 762 mph, so mach 20 is about 15,240mph.
About 761 mph
Mach 1.7 is equal to about 1294 mph.
645.38104_MPH_">645.38104 MPH-is 0.87 Mach -
3044.83 mph
1534.54 mph
Mach 3.3 is about 2,512 mph depending on altitude.
mach 1= 761 mph at sealeveltherefore mach_5_=_3,806.0_mph">mach 5 = 3,806.0 mphJust hypersonic Hope this helps.
Mach 0.7 is 533 mi/h (rounded)