one train is 200 m long and is travelling at speed of 40 km/h. Another train is 300 m long and is travelling at speed of 60 km/h on parallel track. How much time will they take to go past each other completely if : they are running in same direction ?
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relative velocity of faster train with respect to slower train is 10m/s.
for overtaking the train relative distance to be covered is 200+300=500.
so time taken is 50sec.
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