Mach one is the speed of sound, which is about 761.2 miles per hour (340.3 meters per second). Mach two is twice the speed of sound, which is about 1,522.4 miles per hour (680.6 meters per second).
Ok, let's figure this one out: Assume mach speed is 1,010 feet per second, we could travel 689 miles in one hour. (1010 ft * 60sec *60min) / 5,280 ft = 689 mph rounded. Therefore, 0.81 of mach should be 558.09 mph
Mach 1 is 1,225.044 km/h
1.695
Mach refers to the speed of sound in air. Typically about 750 mi/hr but it varies faster or slower with temperature from cold to hot respectively. Mach one is one times speed of sound. Mach 3 would be three times speed of sound.
Mach 10 is equivalent to 3,402.9 meters per second. It is about 7,000 miles per hour. At Mach 10, an aircraft could circumnavigate the earth in less than four hours. The Mach number is a measure of how fast an object is travelling relative to the speed of sound. The Mach number is calculated by dividing the speed of an object by the speed of sound. Speed of sound is about 760mph
The Concorde had a cruising speed of around Mach 2, which is roughly 1,354 miles per hour or 2,180 kilometers per hour. It was known for being one of the fastest commercial aircraft in operation.
3 miles
60 miles
There are 60 minutes in an hour, so 60 miles an hour.
Eighty. That is what "miles per hour" means. It means how many miles you will go in one hour, if you keep going at that speed.
55 miles