Distance = velocity * time = 299792458 m / s * 0.000000001 sec
= 0.299792458 metres
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1609.344
5 billion
It takes 1.3 to 1.4 nanoseconds for light to travel 1 foot.
None. It's a trick question. Light travels in firsts.
How many hours does it take to get to 4.5 billion km