Answer :

From:

3.15--------------4 metres in 300 seconds--------------->3.20

The beetle covered a distance of 4 metres in the space of 5 minutes, which is 5*60 seconds. 5*60 seconds is in fact: 300 seconds.

So the beetle was moving at a very slow speed of (1/75) metres per second.


littlestar
Distance covered = s = 4 meters
Time taken = t = 5 minutes = 4 X 60 = 240 seconds

Speed = s / t = 4 / 240 
             = 0.01667 m/s Answer

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