How Fast Is Mach 1?

Answer

Based on the standard atmospheric model, Mach 1 is 761.2 miles per hour at sea level. The speed changes based on temperature and at altitude the temperature is lower than sea level. Based on this, the speed of Mach 1 is estimated at 660.1 miles per hour. You can find more information here: http://www.aerospaceweb.org/question/atmosphere/q0102c.shtml
Q&A Related to "How Fast Is Mach 1"
Mach 1 is the speed of sound, which varies by the air's pressure and temperature. Mach 1 at sea level is 340.3 m/s, 761.2 mi/h, 1,225 km/h
http://wiki.answers.com/Q/How_Fast_is_a_Mach
Mach 1 = 340.29 m / s. It's the speed of sound!
http://www.chacha.com/question/how-is-fast-is-mach...
Mach 1 is the speed of sound, which is 332 m/s or 1195 km/hr or 717 miles/hour. Mach numbers are named after an Austrian philosopher, Ernst Mach (1838-1916).
http://www.kgbanswers.com/how-fast-is-mach-1/42235...
Mach number is a common 'ratio' unit of speed when one is talking about aircrafts. By definition, Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in
http://answers.yahoo.com/question/index?qid=200903...
1 Additional Answer
The speed of sound, or Mach 1 is: 761.2 MPH. When doing scientific calculations the speed actually changes slightly based on the altitude and temperature. You can find more information here: http://mcfisher.0catch.com/other/mach1/mach1d.htm
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