Question

Multiple-Choice The average distance
from the Sun to Mars is 2 28 x 1011 meters.
ihe speed of light is approximately
3.00 x 10 meters per second. Which
the average time it tak
from the Sun to Ma ars? Los
CAD 480 seconds
light to travel
D 540 seconds
C 670 seconds
760 seconds
CD 820 seconds

Answer 1

Alright, so it would be helpful to think about this question in terms of units. You're given a distance (meters) and speed (meters per second). You're asked for time (which is in seconds).

If you do $\frac{meters}{meters/second}$, your answer will be in seconds. So divide your distance (2.28 x 10^11 meters) by your speed (3.00 x 10^8 meters/second), and you should get your time!