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How long would it take light to travel 3.0km

User JAAD
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1 Answer

6 votes

Given that the distance traveled by light is d = 3 km = 3000 m.

Also, the speed of light is


c=\text{ 3}*10^8\text{ m/s}

We have to find the time taken by light to travel.

The time taken can be calculated by the formula


\begin{gathered} \text{speed = }(dis\tan ce)/(time) \\ \text{time =}\frac{dis\tan ce\text{ }}{speed} \\ =(d)/(c) \end{gathered}

Substituting the values, the time will be


\begin{gathered} t=(3000)/(3*10^8) \\ =1*10^(-5)\text{ seconds} \end{gathered}

User Londeren
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