Question

PLZ HELP!!!!

A police car turns on a siren near an observer standing still on a sidewalk. The observer hears the pitch of the siren getting higher. Which of the following accurately describes the movement of the police car?

A. The police car is not moving.
B. The police car is moving toward the observer.
C. The police car is moving away from the observer.

Answer 1

B, the pitch is higher because the sound waves are compressed by the vehicle as it moves towards the observer.

Answer 2

i believe the answer would be B) ...... sorry if i'm wrong