a train is travelling at a speed of 108 km/hr and crosses a telegraph post in 24 sec. find : i) the length of the train
ii) time taken by the train to cross a bridge which is 90 m long.
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The length of the train is below =
Speed of train in m/s.=108×5/18=30 m/s.
DISTANCE=speed × time
DISTANCE=30×24=720 metres
The length of the train =720 metres.
Time taken by the train to cross a bridge of length 90 m. is below=
length of the train+length of bridge
720+90=810
Speed of train =30 m/s.
810/30=27 second
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