As I am also attaching solution along with the problem there is no point in posting this thread in homework forums .
In the following question (solution is also there) https://s29.postimg.org/omlnt73lz/IMG_20170407_090748.jpg https://s18.postimg.org/hsuxm5uvt/IMG_20170407_090805.jpg why are we...
Time = distance/ speed
Time taken by the two trains to cross each other = distance to cross/ relative speed (as both are moving)
Distance to cross =sum of length of trains
Therefore
Time taken by the two trains to cross each other = sum of length of trains/relative speed of trains
Right?
A similar type of problem I have come across is as follows
Two train each of length 100 m are running on parallel tracks. One overtakes the other in 20 seconds and one crosses the other in 10 second. Calculate the velocities of two trains. I just want to ask what's the difference between...
Two trains having lengths of 120 m and 100 m are running in the opposite directions with velocities 40 km/h and 50 km/h . In what time they will completely cross each other? In the solution it's given that
Time taken by the two trains to cross each other = sum of length of trains/relative speed...