A classical mechanics problem by Tunk-Fey Ariawan

Classical Mechanics Level 1

It is noontime and the sun is shinning overhead. If the sun suddenly stopped shining, how long in seconds would it take you to become aware of the fact?

Details and assumptions :

  • Distance between the Sun and the Earth \(= 1\text{ AU}=1.5\times 10^{8}\text{ km}\)

  • The speed of light \(=3\times 10^{8}\text{ m/s}\)

  • \(1\) day on the earth \(=86,400\text{ s}\)\[\]

Credit image : Wikipedia


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