Lightning and Thunder !

Tushar observes lightning in his area. He hears the sound 5 s after he observed lightning. How far is he from the place where lightning occurs if speed of sound in air is 330m/s.

Details and Assumptions:- Answer in unit kilometer.


The answer is 1.65.

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1 solution

Alpesh K
Aug 15, 2014

Speed(S) = Distance(D)/Time(T)

now,Speed = 330m/s & Time = 5s is given. Thus substituting these values in above Equation.

.`. 330 = D/5

.`. D = 330*5

    = 1650m/s

    = 1.65km/s

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