A classical mechanics problem by Tunk-Fey Ariawan

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 AU=1.5×108 km= 1\text{ AU}=1.5\times 10^{8}\text{ km}

  • The speed of light =3×108 m/s=3\times 10^{8}\text{ m/s}

  • 11 day on the earth =86,400 s=86,400\text{ s}

Credit image : Wikipedia


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