(Do not try the following: it could kill you. This question is only about a hypothetical possibility.) If you were standing below an object emitting a fixed frequency sound falling at terminal velocity, as it approached you, you would hear the sound
A) drop in frequency.
B) stay at the same frequency.
C) increase in frequency.
D) decrease in loudness.
E) stay at the same loudness.

Question

Quizplus · Accepted Answer

The frequency of the sound wave would remain constant as the object falls because the object is not moving relative to the air molecules that are carrying the sound wave. Therefore, the frequency would not be Doppler shifted. The loudness may decrease as the object gets farther away and the intensity of the sound decreases, but this is not specified in the question.

(Do Not Try the Following: It Could Kill You