770 mi/hr. Velocity of sound in the open is influenced by air temperature more than by atmospheric pressure. At 21 degrees C, speed is 344 m/sec (1,100 ft/sec); at 50 degrees C, 360 4m/sec, or 42 ft/sec faster.
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Speed of sound in air --
770 mi/hr. Velocity of sound in the open is influenced by air temperature more than by atmospheric pressure. At 21 degrees C, speed is 344 m/sec (1,100 ft/sec); at 50 degrees C, 360 4m/sec, or 42 ft/sec faster.
