If the speed of light is 3 * 10⁵ km/s and 1 km = 0.62 mile, what is the speed of light in miles per hour (mph)? A) 670 million mph B) 670 thousand mph C) 186 mph D) 186 thousand mph E) 3.2 billion mph

Question

Quizplus · Accepted Answer

The speed of light is 3 x 10^5 km/s. Converting km to miles gives 3 x 10^5 km/s * 0.62 miles/km = 1.86 x 10^5 miles/s. Converting seconds to hours (1 hour = 3600 seconds) gives 1.86 x 10^5 miles/s * 3600 s/hour = 670 million mph.

If the Speed of Light Is 3 * 105 Km/s

If the Speed of Light Is 3 * 10⁵ Km/s