Question

A train 200 m long moving with a speed of 72 km/hr . Time required by train to cross a bridge which is 1 km long is :

Answer 1

Answer:

60 s or 1 min

Explanation:

Speed of train is= 20m/s

So...

In order to cross the bridge 1km long,

Train would have to cover the bridge lenght and the train's length itself.

So...

Total distance the train would have to travel= 1000m+200m=1200m

And..

therefore,

Time taken by the train to travel 1200m=1200/20 s= 60s

Hence the train would take 60s or 1 min to cross the bridge.

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Answer 2

Answer:

Train cross it in one min