Question

How much time will it take light moving at 300,000 km/s to reach us from the sun? The sun is 15,000,000 km from earth.

Answer 1

50s because 15,000,000/300,000 is 50

Answer 2

Answer:

50 sec

Explanation:

Well we have the speed given as 300,000 km/s and distance given as 15,000,000 km. The time can be calculated by dividing the distance with the speed since

s = d/t

⇒t = d/s = 15,000,000 km/ 300,000 km/s

=50 sec

∴ t = 50 sec

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