Sound travels at a speed of 330 m/s. If a lightning bolt strikes the ground 3 km away from you, how long will it take for the sound to reach

Question

Sound travels at a speed of 330 m/s. If a lightning bolt strikes the ground 3 km away from you, how long will it take for the sound to reach you?

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Euphemia 4 years 2021-07-28T11:18:55+00:00 1 Answers 386 views 0

Answers ( )

  1. Delwyn
    2
    2021-07-28T11:20:02+00:00
    Reply

    Answer: 9.09 seconds

    Explanation:

    Given that,

    speed of sound = 330 m/s

    Distance away = 3 km

    (since the SI unit of distance is metres, convert 3km to metres

    1km = 1000 metres

    3km = (3 x 10000) = 3000 metres

    Time it take for the sound to reach you = ?

    Now, recall that speed is obtained by dividing distance travelled by the time taken.

    i.e speed = distance / time

    330 m/s = 3000 m / time

    Time = 3000 m / 330 m/s

    Time = 9.09 seconds

    Thus, it will take 9.09 seconds for the sound to reach you.

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