Question

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.​

Answer 1

Time taken=5min=5×60s=300sec

speed of signal u =3×10^8 m/s

Distance=??

we know that

speed= Distance/time

Distance= Speed×Time

putting the value

Distance= 3×10^8 × 300

Distance = 9×10^10m

I hope it may help you

Answer 2

Solution :-

Given that,

Speed = 3 × 10⁹ m/s

Time taken = 5 × 60 s

                   = 300 s

We know that,

Distance = Speed × Time

                = 3 × 10⁸ m/s × 300 s

Distance = 900 × 10⁹ m

               = 9 ×10¹¹ m