Mach 1 = Speed of sound = 340.29m/s Mach 7 = 2,382 m/s or 5,328 mph The speed of sound changes with temperature and elevation so check out this link if you want more info: http://www.aerospaceweb.org/question/atmosphere/q0102c.shtml
Some call it hypersonic - others hold that for Mach 7
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.
Mach 0.8 = about 593.2 mph
Some call it hypersonic - others hold that for Mach 7
Speed Racer - 1994 The Mach-5 Is Missing 1-7 was released on: USA: 1993
Maximum speed: Mach 0.96Operating speed: Mach 0.89
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.
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.)
Mach 2.
the Mach number
Mach refers to the speed of sound, for example, mach 1, equals the speed of sound, mach 2, the speed of sound times 2. So, mach 25 would mean, 25 times the speed of sound.
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.
Mach is the coefficient of the speed of sound, so Mach 1 means you are travelling at 1 x the speed of sound.
That means the speed, compared to the speed of sound. For example, "mach 2" means twice 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.