Question

two trains move in the same direction along parallel tracks one of them is 200 m long passenger train travelling with a velocity of 72 kilometre per hour the second one is 800 metre long goods train travelling with a velocity of 27 kilometre per hour how long will it take for passenger train to overtake the goods train

Answer 1

Explanation:

take relative velocity, now both train is moving in same direction so the relative velocity will be v1 - v2, which is 72-27=45kmph now total distance is length of train 1 + length of train 2= 1000m or 1 km

time =1/45 hrs