Question

Speed of light is 3.0x108 m/s. Convert speed of light unit into miles per hour (mi/s). 3.0x108 m/s =

mi/s

Report your answer in the format with correct sig figs:

5x1013
Given:

1 mile = 1.61 km

1 km = 1000 m

Answer 1

Explanation:

1 mile = 1.61 km and 1 km = 1000 m

The speed of light is $3\times 10^8\ m/s$. We need to convert it into miles per hour.

1 m = (1/1000) km

$3\times 10^8\ m=\dfrac{3\times 10^8}{1000}\\\\=3\times 10^5\ km$

1 km = (1/1.61) miles

$3\times 10^5\ km =\dfrac{3\times 10^5}{1.61}\\\\=1.86\times 10^5\ \text{miles}$

So, $v=1.86\times 10^5\ \text{miles/s}$

Hence, this is the required solution.