Question

Mars is roughly 60 million km from earth. How long does it take for a radio signal originating from earth to reach mars? radio signals travel at the speed of light

Answer 1

200 seconds

Step-by-step explanation:

60 000 000 000 m / 3 x 10^8 m/s

6 x 10 ^10 / 3 x 10^8 s

2 x 10^2 s = 200 seconds