Question

Light travels at a speed of 299,792 kilometers per second. What is the speed of light, in miles per minute? (Round your answer to the nearest thousand) Note: There are 1.609 kilometers in a mile.

Answer 1

11,179,000 mi/min

Explanation:

You want the given speed of light expressed in miles per minute.

Units conversion

To convert the speed from km/s to mi/min, we need to multiply by factors of s/min and mi/km.

`\frac{299792\text{ km}}{\text{s}}*\frac{60\text{ s}}{\text{min}}*\frac{1\text{ mi}}{1.609\text{ km}}=(299792\cdot 60)/(1.609)\,\frac{\text{mi}}{\text{min}}\\\\\approx\boxed{11,\!179,\!000\text{ mi/min}}`