Train

A train crosses another train in 20 sec. Find out the lengths of the trains. A. Ratio between the lengths the of second train and first train is 4:5. B. Ratio between the speed of first and second trains is 1:2. C. The speed of first train is 36 km/hr.

A passenger train and a goods train are running in the same direction on parallel railway tracks. If the passenger train now takes three times as long to pass the goods train, as when they are running in opposite directions, then what is the ratio of the speed of the passenger train to that of the goods train ? (Assume that the trains nm at uniform speeds)

Two trains of same length moving in opposite direction. Speed of train1 is 54 km/hr and Speed of train2 is 18 km/hr. First train takes 30 seconds to cross the second train. Find the time taken by first train to cross 450 m long platform.

The speed of train A and train B is 93 km/hr and 51 km/hr, respectively. When both the trains are running in the opposite direction, they cross each other in 18 seconds. The length of train B is half of the length of train A. If train A crosses a bridge in 42 seconds, then find the length of the bridge.

A train A is travelling at a speed of 108 km hr^(-1) The train approaches another train B standing on the platform.The engine of the train B below its horn. The frequency of the horn as observed by the driver in train A is 504 Hz. The frequency of the horn of train B is (speed of sound = 330 ms ^(-1)

Length of first train is 300 meter and its speed is 25 km/h and length of second train is 200 metre and both the trains are running towards each other. If higher speed train crosses the lower speed train in 45 seconds, then find the speed of second train in km/h.

A train is moving eastwards with a velocity of 10 ms^-1 . On a parallel truck another train passes with a velocity of 15 ms^-1 eastwards, To the passengers in the second train, the first train will appear to be moving with a velocity.

Apparent frequency of train A is heard by observer in train B as 3/4 of the true frequency. Find the value of velocity of train B in m/sec. taking train A to be stationary. If the sound velocity is 332 m//sec .-