Kevin hears a thunder 8 seconds after the lightning strikes.
How far are the clouds producing the lightning from Kevin?
(speed of sound in air = 340 m/s)
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Solution
Speed of sound (v) = 340 m/s
Time taken to hear (t) = 8 seconds
Distance from the lighting strike (d) = ?
We know that:
Speed = distance (d)/time (t)
→ d = v x t
= 340 x 8
= 2720 metres or 2.72 km