Light takes 1.28 s to travel from the Moon to Earth. What is the distance between them?

384,000

Explanation:

Time taken by light to travel from earth to moon t=1.28s

Let us assume that the speed of light = c

So, the distance traveled by light in this time = c x t

this will be the distance which light traveled to reach moon, so this will be the distance between earth and moon.

The speed of light is 300000 km/s

By putting the values

we get

Distance = c x t

= 300000 x 1.28 km

=384000 km

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