Q. 215.0( 2 Votes )

A 150m long train

Answer :

Speed of train towards north = 10 ms–1

The speed of parrot towards north = 5 ms–1

Now, the speed of train = = 10 ms–1 and Speed of parrot = = –5 ms–1 (Due to the opposite direction)

Now, spthe eed of parrot with respect to the train


(Considering only the magnitude)

So, Distance to be travelled = Length of train = 150 m

And speed =

Now, Time =

So, time taken by the the parrot to cross the train is 10 s.

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