Question

if you hear a sound of a thunder 7 seconds after you see its flash assuming that you see the flash as soon as the lightning occur. calculate how far did the lightning occur

Answer 1

speed of sound in air= 344m/s

So, distance traveled by the sound in 1 sec= 344m

Distance traveled by sound in 7sec= 344×7m
= 2,408 m
= 2.4km