If an air plane flies much faster than a speed of sound can humans still hear it.
The simple answer is yes. Why would you think otherwise?
It just means that the plane would pass by you first before you would actually hear it fly past by you
The humans inside the plane would not hear it. Well, not like those ouside, anyway. The sound travelling along the body of the plane would reach the ears of those inside, but the external noise would be left behind.
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