The speed of light is 186,000 miles per second. About how many miles does light travel in an hour?

5.2 × 10^1 miles
3.1 × 10^3 miles
1.1 × 10^7miles
6.7 × 10^8miles

Respuesta :

Mult. 186000 miles/sec by   3600 sec / 1 hour.  This will give you 

669,600,000 miles.  Which of the given answers is closest?