Question

a train 120 metres long passes a tree in 5 seconds how long will it take to cross a railway platform 180 metres long

Answer 1

Since the length of the tree is negligible, so distance in first case is taken as the length of the train.

Speed = Distance / Time
= 120/5
= 24 m/s


Now ,

Distance = ( 120 + 180 ) = 300 m
Speed = 24 m/s


Time = Distance / Speed
= 300 / 24
= 25/2
= 12.5 seconds

Answer 2

Answer:

a train 120 metres long passes a tree in 5 seconds how long will it take to cross a railway platform 180 metres long?