Q 65

While standing at a crosswalk, you hear a frequency of 540 Hz from an approaching police car. After the police car passes, its frequency is 480 Hz. What is the speed of the police car? (speed of sound = 340 m/s) A) 13.1 m/s B) 17.4 m/s C) 20.0 m/s D) 26.2 m/s

Multiple Choice