Question

8. During an experiment, a signal from a spaceship reached the ground station in five minutes. What
was the distance of spaceship from the grund station? The signal travels at the speed of light,
$3 \times {10}^{8} {ms}^{ - 1}$
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Answer 1

Explanation:

Let the distance between the spaceship and the ground station be 'S' .

Then, S=vt

where, v= speed of signal =3×10 8m/s

t= time taken =5min=5×60s=300s

∴s=3×10

8×300=9×10

10m.

Answer 2

Please refer to the attachment.