Question 5 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, 3×108ms−1
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Solution
Given, speed = 3×108ms−1 and time =5min=5×60s=300s We know, distance =speed×time ∴ Distance =3×108×300=9×1010m So the distance of the spaceship from the ground station is 9×1010m