During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 108 m s−1.
Speed= 3 × 108 m s−1
Time= 5 min = 5 x 60 = 300 secs.
Distance= Speed x Time
Distance= 3 × 108 m s−1 x 300 secs. = 9 x 1010 m
