Question

a boy fires a gun and hear the Echo 2 seconds later. if he is 350m away from a wall, calculate the velocity of sound in air. ​

Answer 1

Answer:

The boy heard the sound after 2 seconds this means that it took 1 second for the sound to reach the wall and another second to come back.

so the sound covered a distance of 350m in 1 second

than the speed of sound was 350m/s