Answer:

this is answer of a train

Answer:

In this question the speed of train is in km/hr but time taken by a train to cross a pole is in 'sec'.

So, first we convert the unit of speed.

Conversion, 1km/hr = (5/18) m/sec

=> 120 km/hr = 120×5/18 =(100/3) m/sec

Now, length of train = speed of train × time taken by it to cross the pole = (100/3)×9 =300m

Step-by-step explanation:

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