Question

The speed of light is 3.00×108 m/s. How fast is this in miles per hour (miles/h)? Use the conversion 1mile=1610m.

Answer 1

Answer:

speed of light in miles per hour will be $6.709\times 10^8miles/hour$

Explanation:

We have given speed of the light $v=3\times 10^8m/sec$

We have to change this velocity in miles/hour

It is given that 1 miles = 1610 m

And we know that 1 min = 60 sec

And 1 hour = 60 minute

So 1 hour = 60×60 = 3600 sec

Here $1m=\frac{1}{1610}=6.211\times 10^{-4}miles$

And 1 sec $=\frac{1}{3600}=2.77\times 10^{-4}hour$

So $3\times 10^8m/sec=3\times 10^8\frac{6.211\times 10^{-4}miles}{2.777hour}=6.709\times 10^8miles/hour$

So speed of light in miles per hour will be $6.709\times 10^8miles/hour$