0,72 Mach is a subsonic speed. Mach number = speed of an object/speed of sound The speed of sound in dry air at 20 0C is 1 236 km/h.
That means the speed, compared to the speed of sound. For example, "mach 2" means twice the speed of sound.
Mach 1 is the speed of sound. 768 miles per hr. Mach 2 is twice that & so on.
Match1? No clue. But you are probably referring to MACH 1, which is the speed of sound in air, roughly 340 m/s depending on air temperature. Mach 2 would be twice the speed of sound, mach 3 three times, etc.
The Mach number for the speed of an object travelling through a particular medium is the ratio of the object's speed relative to the speed of sound through the same medium. The speed of sound through any medium depends on the nature and density of the medium and, as a result, so does the Mach number. In air, the Mach ratio is mostly dependent on temperature and humidity, less so on altitude. Generally, Mach 1 (in air, at standard sea level conditions, and at 15 deg C) is approx 760 mph. So Mach 3 would be approx 2280 mph. But Mach 3 in water, for example, would be much faster since sound travels faster in water.
The mach number is the speed, compared to the speed of sound in air. Thus, mach 1 is the speed of sound, mach 2 is twice (2 times) the speed of sound, mach 3 is 3 times the speed of sound, etc.
Mach 3 refers to traveling at a speed three times the speed of sound. In aeronautics, Mach numbers are used to compare the speed of an object to the speed of sound in the medium through which the object is traveling. Mach 3 is considered to be supersonic speed.
Answer Mach 12 Supersonic Speed usually refers to speed just above Mach 1, or as high as Mach 3. Hyper-speed is a higher range but there is no set definition.
Speeds faster than Mach 1 are measured in multiples of Mach, such as Mach 2 (twice the speed of sound), Mach 3 (three times), and so on. Each Mach number represents the speed of an object in relation to the speed of sound.
Answer Mach 12 Supersonic Speed usually refers to speed just above Mach 1, or as high as Mach 3. Hyper-speed is a higher range but there is no set definition.
The SR-71 Blackbird's top speed is classified, but it is known to have flown at speeds exceeding Mach 3 (about 2,300 mph or 3,700 km/h).
Maximum speed: Mach 0.96Operating speed: Mach 0.89
340.29 m/s
the Mach number
Mach 3, officially.
About 3 times the speed of sound. (3 mach)
The "Mach number" is the speed of the aircraft as a percentage of the speed of sound. So an aircraft going at Mach 0.74 is traveling at 74% of the speed of sound. (Mach 0.74 is a typical airliner speed.)