When a rocket is traveling toward a mountain at 100 m/s,the sound waves from this rocket's engine approach the mountain at speed V.If the rocket doubles its speed to 200 m/s,the sound waves from the engine will now approach the mountain at speed
A) 4V.
B) 2V.
C) V.
D) V.

Question

When a rocket is traveling toward a mountain at 100 m/s,the sound waves from this rocket's engine approach the mountain at speed V.If the rocket doubles its speed to 200 m/s,the sound waves from the engine will now approach the mountain at speed
A) 4V. 
B) 2V. 
C) V. 
D) V.

Quizplus · Accepted Answer

The speed of sound is constant in a given medium, regardless of the speed of the source. Therefore, the speed of the sound waves from the rocket engine will still be V when the rocket is traveling at 200 m/s.

When a Rocket Is Traveling Toward a Mountain at 100