Question

Light travels through space at 186,282 miles per second and it takes about 1.3 seconds for light to travel from the moon to Earth. Which of the following is the correct method of finding the distance, in miles, between the moon and Earth?

Add 186,282 and 1.3
Divide 186,282 by 1.3
Multiply 186,282 by 1.3
Subtract 1.3 from 186,282

Answer 1

The correct method would be multiplying the speed of light by the time it takes to travel from the moon to Earth. This is because:

S=So+V*t

In which:

S= space

So= space at the start (origin)

V=speed or velocity

t=time

By multiplying miles/second by seconds you get miles as a result.

Answer 2

Multiply 186,282 by 1.3

Step-by-step explanation:

Given:

Speed at which the light travels = 186,282 miles/sec

Time taken for the light to travel from moon to earth = 1.3 sec

To determine:

Distance between earth and moon

Step-by-step explanation:

Speed of an object is the ratio of the distance traveled by the time taken

`Speed = (Distance)/(Time) \\\\\\Distance = Speed * Time\\In\ the\ given\ example\\\\Distance = 186,282 miles/sec * 1.3 sec = 242167 miles`