Question

The speed of light is about 300,000 kilometers per second. Convert the speed to miles per hour. Round your answer to the nearest hundred thousand miles per hour

Answer 1

300000 km/sec x 3600 sec/hr=1080000000 km/hr
1080000000 km/hr / 1.6 km/m=675000000 mph
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Answer 2

Answer:

671080887.619  miles/hour        

Step-by-step explanation:

Given : Speed of light = 300,000 kilometers per second

To Find:  Convert the speed to miles per hour

Solution :

1 kilometer = 0.621371 miles

3600 second = 1 hour

So, 1 second = $\frac{1}{3600}$

So, speed of light in miles per hour:

= $\frac{300000\times 0.62137119224}{\frac{1}{3600}}$

= $\frac{300000\times 0.62137119224\times3600 }$

= $671080887.619$

Thus the speed of light is 671080887.619  miles/hour