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What speed is mach 1?

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Laurie Guinn

It is said that the aircraft is flying at Mach 1 if its speed is equal to the speed of sound in air (which is 717 miles/hour.)

If an aircraft is flying at Mach 1 then its speed is equal to the speed of sound in air. ( 332 m/s or 717 miles/hour.)

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What speed is mach 1?

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