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A man fires a gun and hears its echo after \(5\) \(s\). The man then moves \(310\) \(m\) towards the hill and fires his gun again. If he hears the echo after \(3\) \(s\), calculate the speed of sound
 
The formula to find distance is
By applying the values,
 
The velocity of the sound is  \(m/s\)