A train of length 100 m is crossing a bridge 200 m long in length at the speed of 72 kmph. What is the time taken by the train to cross the bridge?
The correct option is A 15 seconds
Speed of train =72 kmph=72×518 ms−1=20 ms−1
Distance travelled to cross the bridge entirely:
=(100+200) m=300 m
Time taken to cross the bridge:
=300 m20 ms−1=15 second