Question

A person hears an echo of his voice from a distant hill after 2 seconds.What is the distance of he hill from the person of the speed of the sound in air is 340m/s

Answer 1

Answer:

Distance from the hill = x

Total distance travelled =2x

distance=340*2=680m

2x=680m

x=340m

hence the distance from the hill is 340m.

Answer 2

Speed=2d/t

distance=(speed×time)/2

distance=(340×2)/2

distance=340 metre.

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@kapilsaraswat781