Problems on Trains formula

problems on Trains formula

km/hr to m/s conversion:

m/s to km/hr conversion:

Formulas for finding Speed, Time and Distance

1. When train passes a telegraph post or a standing man it should travel the length equal to the length of the train.
2. When a train passes a platform or crosses a bridge it should travel the length equal to the sum of the lengths of train and platform or bridge both.
3. When two trains are moving in opposite directions their speeds should be added to find the relative speed.
4. When two trains are moving in the same direction the relative speed will be the difference of their speeds.
5. Two trains are moving in the same direction at x km/hr and y km/hr (where x > y). If the faster train crosses a man in the slower train in ‘t’ seconds, then the length of the faster train is given by
   
6. A train running at x km/hr takes t₁ seconds to pass a platform. Next it takes t₂ seconds to pass a man walking at y km/hr in the opposite direction, then the length of the train is [(5/18)(x+y)k₂]meters and that of the plat-form is [(5/18)[x(t_1-t₂)k₂]]meters.
7. Two trains are moving in opposite directions at x km/hr and y km/hr (where x >y), if the faster train crosses a man in the slower train in t seconds, then the length of the faster train is given by