When a Rocket Is Traveling Toward a Mountain at 100

question 9

Multiple Choice

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.