Question

how much time is will be required for an Express train of length 400m running at a speed of 90 km per hour to cross a bridge of 1200 long ​

Answer 1

Answer:

The time taken by the train to cross the bridge is 96 seconds

Step-by-step explanation:

Speed of the train-90 km/h

in order to cross the bridge the train has to cover its own length and the bridge length.

So total distance becomes=1200+400m=1600m=1.6km

Speed=Distance /Time

Time ×Speed =Distance

Time=Distance / Speed

So,

Time taken by the train=1.6/60 hour (1.6/60)×3600 seconds=96 seconds.