2007-11-30 01:44:19 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Faster than the speed of sound, which is in air 344 m/s
2007-11-30 01:53:28 · answer #1 · answered by klimbim 4 · 0⤊ 0⤋
1350 mph @ 60000 ft
-------------------------------
Concorde takes off at 220 knots (250mph) (compared with 165 knots for most subsonic aircraft). She cruises at around 1350mph - more than twice the speed of sound - and at an altitude of up to 60,000 ft (over 11 miles high). A typical London to New York crossing would take a little less than three and a half hours as opposed to about eight hours for a subsonic flight. Travelling Westwards, the five-hour time difference meant Concorde effectively arrived before she left. She travels "faster than the sun".
--------------------------------
The speed of sound describes how much distance such a wave travels in a given amount of time. In dry air at sea level with a temperature of 21 °C (70 °F) the speed of sound is 344 m/s (1230 km/h, or 770 mph, or 1130 ft/s). The speed of sound is variable and depends on the properties of the substance through which the wave is traveling as well as temperature. For instance, the speed of sound at the top of a mountain during winter will be approximately 330 m/s as opposed to 360 m/s in the middle of a hot desert.
2007-11-30 02:08:27 · answer #2 · answered by JavaScript_Junkie 6 · 0⤊ 0⤋
Zero, in whatever units you chose. It has been permanently retired. 'something about blowing up on the runway.
2007-11-30 03:24:40 · answer #3 · answered by Dr. R 7 · 0⤊ 0⤋