Question

A man is Firing a gun at a terrain distance from a hill. He heart a echo after 4.6 sec. He come classes by 300m. Now he heard the echo after 2.4sec. what will be the distance initially

Answer 1

Answer:

Let d be the initial distance between the given location and hill.  

 

echo heard after 4.6 s means, velocity of sound v = (2d) / 4.6 = d / 2.3 ;

 

in second case velocity of sound v = 2(d-300) / 2.4 = (d-300) / 1.2 ;

 

hence begin math size 12px style v space equals space fraction numerator d over denominator 2.3 end fraction space equals space fraction numerator d minus 300 over denominator 1.2 end fraction end style

solving for d, we will get d = 627 m

Explanation:

Answer 2

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