- excessive velocity
Found on http://www.webdictionary.co.uk/definition.php?query=hypervelocity
A range of speed that is about 12 times or more the speed of sound in air. See also: Hypersonic, Subsonic, Supersonic, Velocity.
Found on http://www.diracdelta.co.uk/science/source/h/y/hypervelocity/source.html
The term hypervelocity usually refers to a very high velocity, approximately over 3,000 meters per second (6,700 mph, 11,000 km/h, 10,000 ft/s, or Mach 8.8). In particular, it refers to velocities so high that the strength of materials upon impact is very small compared to inertial stresses. Thus, even metals behave like fluids under hypervelocity
Found on http://en.wikipedia.org/wiki/Hypervelocity
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