Question

An observer measures the time interval between the sighting of lighting and hearing the thunder .He finds it to be 5.0s if the speedof sounds in air is 340 ms'1 , how far is the cloud from the observer

Answer 1

170meters because,
speed of sound=340km/s
In 5 seconds=340*5=170km

Answer 2

D=340m/s

V=?

S=5.0 or 5

Formula=d=v/s

340=v/5

340*5=1700

Ans=1700

Hope u got the correct answer