Talk at the Speed of Sound: Can 2 People Chat?

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SUMMARY

Two individuals traveling above the speed of sound in a ship cannot communicate verbally due to the inability of sound waves to propagate between supersonic objects moving in parallel. While pilots in a supersonic plane can converse as the surrounding air moves with them, this does not apply to a ship or open deck scenario. Additionally, survival at supersonic speeds on an open deck is impossible due to insufficient breathable air.

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  • Understanding of sound wave propagation
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If two people where traveling above the speed of sound in a ship, could they talk to each other?
 
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in a ship or on its open deck?

Of course, two pilots of supersonic plane may talk to each other, as the air surronding them travel at the same speed as they do.

But you can't send a sound wave from one supersonic object to onother one traveling in parallel.

And - of course - no one may survive supersonic travel on an open deck: you couldn't breathe in such conditions.
 

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