Question

The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers,

how far away a storm is. How far away is a storm if 9 seconds elapse between the lightning and the thunderclap?
Use the formula d= t/3 , where t is the time, in seconds, between the flash and the thunderclap.

27 kilometers
18 kilometers
12 kilometers
3 kilometers

Answer 1

The answer is 3km as there is 9 secs between it and distance = time/3 and 9/3 =3 so distance =3