If a rocket is traveling toward a mountain at 1/2 the speed of sound,the sound waves from this rocket's engine approach the mountain at 1 1/2 times the speed of sound.

Question

Quizplus · Accepted Answer

According to the Doppler effect, the frequency of sound waves changes when the source is moving towards or away from the observer. However, the speed of sound remains constant in a given medium. Therefore, the sound waves from the rocket engine will approach the mountain at the speed of sound, not 1 1/2 times the speed of sound.

If a Rocket Is Traveling Toward a Mountain at 1/2