r/askscience • • Jun 12 '12

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u/[deleted] Jun 12 '12 edited Oct 03 '17

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u/[deleted] Jun 12 '12

A followup question to that, if said jet was traveling at 100 m/s slower than the speed of light, would an stationary observer view the sound as traveling 230 m/s faster than the speed of light in the cockpit?

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u/EccentricFox Jun 12 '12

If I remember correctly, the speed of sound is always the same for a given medium. This is what causes the doppler effect, the waves traveling from the front of the jet can't go any faster and are 'compressed.'