Question

when a train cross a bridge,it has to cover a distance which is equal to​

Answer 1

Step-by-step explanation:

As the train crosses the bridge, the train covers a distance equal to its length plus an additional distance equal to the length of the bridge to cross it. Thus the distance covered by the train to cross the bridge is d=lT+lB.

Answer 2

Answer:

As the train crosses the bridge, the train covers a distance equal to its length plus an additional distance equal to the length of the bridge to cross it. Thus the distance covered by the train to cross the bridge is d=lT+lB.