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Twice the speed of sound. That's the definition of mach number.

Mach number is a more useful measurement of speed than miles per hour in some ways (especially if you're designing an airplane), but not so good for answering questions like "So when are we getting to Denver?" since the speed of sound varies depending on the density of the air.

the actual speed of mach 2 is 2472 km/h which is twice mach 1 (1236km/h) at this speed the airplane is roughly 2 meters shorter. planes that can travel this fast are;

  • e111-a raven
  • mig 25 foxbat
  • f22- raptor
  • f22- strike raptor
  • yf 12a blackbird
  • concorde
  • f 35 c
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9y ago

What else can I help you with?