# physics

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A sonic boom is produced by an aircraft when it does which of the following? A) flies faster than sound continuously.B) None of these.C) All of these.D) first exceeds the speed of sound and breaks the sound barrier.E) pulls out of a subsonic dive.

• physics -

Nuts to the wording. Sonic booms are created when the aircraft is exceeding the speed of sound, for however long the speed exceeds the speed of sound.

A is so poorly worded, it is difficult to understand. I would go with B, but your teacher may argue that she meant A to be the answer, and mark you off.

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