Posted by **Maihul** on Friday, July 6, 2012 at 7:02am.

A 200m long train crosses a 400m long bridge with a speed of 36km/hr . Calculate the time taken by train to cross the bridge? plz give me the answer with explaination

- physics -
**Elena**, Friday, July 6, 2012 at 2:38pm
The speed of the train is v = 36 km/h =36000/3600=10 m/s,

L is the length of the train,

S is the length of the bridge.

The time of passing the bridge begins when head end of the train enters the bridge and ends when its rear end leaves the bridge, therefore, the distance is s=L+S=200+400=600 m

t=s/v =600/10=60s

- physics -
**Aishwarya Jha**, Thursday, September 17, 2015 at 3:15am
speed of the train(v)=36km/h

=36*5/18

=10m/s

let L be the length of the train

and S be the length of bridge

Therefore, distance(s)=L+S

=200+400

=600m

time(t)=s/v

=600/10

=60s ans.

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