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Mach 3 means flying three times the faster than sound. Speed of sound at an usual temperature is 346m/s. This means Mach 3 is about 1 km/s. That is 3600kmph. That is 2250 mph.
2283.59 mph

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6y ago
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14y ago

Mach 3 is 2283.6211 mph

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Q: How fast in mph is mach 3?
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