Question

A man hears an echo of thunder 2 second after lighting strike. Calculate the distance of lighting from man (speed of sound in air = 330m/s)

Answer 1

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Answer 2

Answer: The distance of lighting from man is 330 m.

Explanation:

Given that,

Time =2 sec

speed of sound in air v = 330 m/s

We know that,

$t = \dfrac{2d}{v}$.....(I)

Where, t = time

d = distance

v = speed

Put the value of t and v in equation (I)

$2 = \dfrac{2d}{330}$

$d = \dfrac{2\times330}{2}$

$d = 330\ m$

Hence, The distance of lighting from man is 330 m.