Question

you see lightning strike and hear thunder 5sec later.how far away was lightning strike?
a) 1 mile
b) 2miles
c) 3 miles
d) 4miles

Answer 1

hey there!!


Answer:-. b)2 miles

Answer 2

Assuming the Speed of Sound in Air at that time as : 330 m per sec

⇒ Sound travels a Distance of 330 meter in One Sec

Given : You heard the Sound of Thunder 5 seconds later

Distance travelled by Sound before you heard is : 5 × 330 = 1650m

We know that One Mile = 1609.34 meter

Distance travelled by the Sound before you hear is : 1 Mile (approx)

⇒ The Lightning strike was 1 Mile away from you

Option (a) is the Answer