Question

9. An observer sitting in line of two tanks, watches the
flashes of two tanks firing at each other at the same time,
but he hears the sounds of two shots 2 s and 3-5 s after
seeing the flashes. If distance between the two tanks is
510 m, find the speed of sound. Ans. 340 ms​

Answer 1

as time is constant so the ratio of speed and distance will be same

20:35

=4:7

difference 3

510/3= 170

4*170/2= 350

or 7*170/3.5 = 350