Question

Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. Calculate the distance in meters of one light year. 9.4 m 9 m 9.6 x 1015 m 1 x 1016 m

Answer 1

Note that
distance = velocity * time

Given:
velocity = 300,000,000 m/s = 3 x 10⁸ m/s
time = 1 year = 32,000,000 s = 3.2 x 10⁷ s

The distance traveled is
d = (3 x 10⁸ m/s)*(3.2x 10⁷ s) = 9.6 x 10¹⁵ m

Answer: 9.6 x 10¹⁵ m