Question

Light travels at 186,000 miles per second. Light takes about 11⁄3 seconds to travel from the earth to the moon. Calculate the distance between the earth and the moon based on the speed of light.

Answer 1

Multiply the speed of light with the time it takes to travel from earth to the moon. In this given, the product of the speed of light, 186,00 miles per second and 11/3 seconds is 682,000 miles. So based on the speed of light, the distance between earth and moon is 682,000 miles.