How do you figure this out:The Speed of light is 3x10^5 km/s. How many miles...

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littleairboyaaron

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...can light travel in one second? Is "one second" the same as "per second"?
Thank you.
i mean how many MILES, since the question says it is in KILOMETERS, I'm figuring out how many miles per second.
 
1 mile is about 0.62137 kilometer.
So 3 x 10^5 km/s
becomes 3x100000x0.6=180000
Put the answer in science notation would be 1.8 x 10^5

This is the final answer: 1.8 x 10^5 mi/s
 
You've basically answered the question yourself.

It is saying that light travels 3 x 10^5 km every second so in one second it travels 3 x 10^5 km.
 
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