Question

During an experiment, a signal from 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.

Answer 1

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

Then, S=vt

where, v= speed of signal =3×10  

8

m/s

t= time taken =5min=5×60s=300s

∴s=3×10  

8

×300=9×10  

10

m

Explanation:

hope it is useful??

Answer 2

Answer:

We know that : Distance travelled Speed = Time taken

Here, Speed = 3 × 108 m s–1

Distance travelled = ? (To be calculated)

And, Time taken = 5 minutes

= 5 × 60 seconds

= 300 s

Now, putting the values of speed and time in the above formula, we get :

8 Distance travelled 3 × 10 =

300

So, Distance travelled = 3 × 108 × 300 m

= 9 × 1010 m

Thus, the distance of spaceship from the ground station is 9 × 1010 metres.