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The speed of light is 3 times 10 to the power 8!! So as you can tell light is very fast.

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3 times 10 to the power 8 metres per second.

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If it takes 5 time 10 to the second power seconds for light to travel from the sun to the earth.

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Lets just think about that a little bit.

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So 5 times 10 to the second thats 500.

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500 seconds. You have 60 seconds in a minute. So 8 minutes would be 480 seconds

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So 500 seconds would be about 8 minutes 20 seconds

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So it takes 8 minutes 20 seconds for light to travel from the sun to the earth

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What is the distance in metres between

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the sun and the earth. So they are giving us a rate, they are giving us a speed, they are giving us a

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time and they want to find a distance. So this goes straight back to the standard

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distance is equal to rate times time. So they give us the rate.

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The rate is 3 times 10 to the 8 metres per second

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So its 3 times 10 to the 8 m/s

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That right there is the rate

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They give us the time

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The time is 5 times 10 to the second seconds.

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So times 5 times 10 to the second seconds

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Seconds use that with an s

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So how many metres? What is the distance? What is the distance?

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So we can just reassociate these or actually just move these around

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from the commutative and dissociative properties of multiplication.

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So this right here is the same thing.

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And actually you can multiply the units its called dimensional analysis

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And when you multiply the units you kind of treat them like

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variables. You should get the right dimensions for distance

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Lets just rearrange these numbers.

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This is equal to 3 times 5