Question

light travels 9.45•10^15 meters in a year.There are about 3.15•10^7 seconds in a year.How far does light travel per second.

Answer 1

To determine how far light travels per second, divide the distance light travels in a year (9.45 × 10^15 meters) by the number of seconds in a year (3.15 × 10^7 seconds), which equals 3 × 10^8 meters per second.

Step-by-step explanation:

The student is asking how far light travels in one second. To find this, we divide the total distance light travels in a year by the number of seconds in a year. Since light travels about 9.45 × 10^15 meters in a year, and there are approximately 3.15 × 10^7 seconds in a year, we divide the distance by the time to calculate the speed of light.

So, the calculation will be: (9.45 × 10^15 meters) / (3.15 × 10^7 seconds) = 3 × 10^8 meters per second, which is the speed of light in a vacuum.

Answer 2

299,792 kilometers
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