Question

A car approaches a pedestrian standing on the side of the road. The car is traveling at 24.2 m/s. The horn of the car emits a sound wave with a frequency of 482 Hz. What frequency is heard by the pedestrian

Answer 1

518.4 Hz

Step-by-step explanation:

let speed of sound is 344 m/s

f' = v / (v- vs) x f

= 344 / (344-24.2) x 482

= 1.075 x 482

= 518.4 Hz