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, $3\times {10}^{8}m{s}^{-1}$

Answer 1

Step 1, Given data

Speed = $3\times {10}^{8}m{s}^{-1}$

$Time=5min=5\times 60s=300s$

Step 2, Finding the distance

We know,

$Distance=Speed\times Time$

Putting all the values

$Distance=3\times {10}^{8}m{s}^{-1}\times 300s=9\times {10}^{10}m$

Hence the distance of the spaceship is $9\times {10}^{10}m$