Thunderstorm, miles to seconds between lightning and thunder

Question

In a thunderstorm, the formula M = t/5.6 gives the approximate distance, M, in miles in a lightning strike if it takes t seconds to hear the thunder after seeing lightning. If you are 10 miles away from seeing the lightning flash, how long will it take the sound of thunder to reach you?

Answer 1

M = t/5.6

 

Set M = 10 and solve for t.

 

10 = t/5.6

 

t = 5.6(10) sec = 56 sec