Question

a) The chasing car B travellimg at 20m/s sounds a horn which the driver of leading car A travelling at 16m/s estimates has frequency 340 Hz. The
frequency
which B's own drive hears (W = 340ms)?​

Answer 1

Answer:

I don't understand....

Answer 2

Answer

336ms-1

Explanation:

F' = 340hz

U0=16ms-1

Us=20ms-1

F'= v-Uo

- - - - - * f

V-Us

F'=(340-16)*f/340-20

F'=324/320 *f

340*320/324= f

336ms-1 =f