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Is 40 kilometers per minute as fast as The Speed of Sound?

It's about one-and-nine-tenths times as fast as The Speed of Sound
The speed of The Speed of Sound is about 20.60 kilometers per minute.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 20.60 kilometers per minute. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 89.80 kilometers per minute to 93.60 kilometers per minute in water, depending on its salinity.
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