The Concorde airplane flies faster than Mach 1. Mach 1 is
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Helped by sonic booms
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A constant no
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The speed of sound
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A jet car
C
Correct answer
Explanation
Mach 1 is the speed of sound in the surrounding medium, approximately 343 meters per second in air at sea level. Anything traveling at Mach 1 is moving at the speed of sound, while Mach 2 is twice the speed of sound. The Concorde routinely flew at speeds greater than Mach 1, making it a supersonic aircraft.