What is the speed of light in mph?

Question

What is the speed of light in mph?

Question #136155. Asked by Kwicky.
Last updated Jun 12 2014.
Originally posted Jun 12 2014 1:37 AM.

ozzz2002

Answer has 3 votes

Currently Best Answer

ozzz2002

Moderator
23 year member
177 replies avatar

Answer has 3 votes.

Currently voted the best answer.

About 671,000,000 miles per hour! However, even at that rate, it takes 2.5 million years to reach the nearest galaxy, Andromeda.

https://en.wikipedia.org/wiki/Speed_of_light

Jun 12 2014, 1:45 AM

Sign in or Create Free User ID to participate in the discussion

Answer 1

186,000 mi/sec x 60 sec/min x 60 min/hr = 186,000 x 3,600 mi/hr = 669,600,000 miles per hour. The attached link says 671,000,000 mph but doesn't show the calculation.

https://en.wikipedia.org/wiki/Speed_of_light

A more accurate value for 'c' is 186,282 mps. The calc'd value is then 186,282 x 3,600 = 670,615,200 mph.

What is the speed of light in mph?

Other Similar Questions & Answers

Related FunTrivia Quizzes