Question

a train of length 100m is moving with constant speed of 1000cm/s.the time taken by it to cross a bridge of length 500m is​

Answer 1

Train 100m long and moving with velocity 60km/hr=60×
18
5
​
m/sec=
3
50
​
m/sec.

We have to find time train will take to cross a brige 1km i.e 1000m long.

Length of train be lt , length of bridge be lb and velocity of train be v

So time taken =
v
lt+lb
​


=
3
50
​

100+1000
​


=66sec


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