Question

The speed of sound is 310m/s.A person fires a gun and echo is heard after 1.5sec.Calculate the distance of person from a cliff from which echo take place

Answer 1

Explanation:

time after which the eco is heard = time taken by the sound wave to reach the cliff and come back to the man

therefore t=1.5s

let total distance covered by the wave in this process=2d

velocity =310 m/s

2d=s x t

d=(s x t) /2

=(310*1.5) /2

=237.5m

Answer 2

Answer:

the answer of this question is 232.5m