Question

4) The speed of light is 3 x 10^8 meters per second. The distance to the

sun is 1.5 x 10^11 meters. How long does it take light to reach the Earth
from the Sun. 0.5 seconds
5 seconds
50 seconds
500 seconds

Answer 1

500 seconds

Explanation:

This is a distance = rate × time problem

d = 1.5 × 10^11 m

rate = 3 × 10^8 m/s

So, d = rate × t

t = d ÷ rate = 1.5 × 10^11 m ÷ 3 × 10^8 m/s = 500 s