Mach 9 or ''variation'', may refer to: *

Mach number The Mach number (M or Ma), often only Mach, (; ) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound. It is named after the Austrian physicist and philosopher Erns ...

for nine times the speed of sound **

Hypersonic speed In aerodynamics, a hypersonic speed is one that exceeds five times the speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since i ...

of 9 times the speed of sound * Wharfedale ''MACH 9'', a loudspeaker * ''Mach-IX'' (Marvel Comics), comic book superhero alter-ego of Marvel Comics character ''

Abner Jenkins Abner Jenkins, also known as the Beetle, MACH-1, MACH-2, MACH-3, MACH-IV, MACH-V, MACH-VII and MACH-X, is a character appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Carl Burgos, he debuted in ...

'' * "Mach 9 (nine) is equivalent to 6905.42 miles per hour - Source Google Unit Convertor

See also