Two trains are travelling in opposite direction at 72 km/h and 90 km/h. They cross each other in 16 s. If the length of the slower train is 320 m, then find the length of the faster train (in m).
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Speed of first train = 72 km/ h
Speed of second train = 90 km/h
The common point when they meet = 72+90
= 172 km/h
The slower train length = 320 m
Speed of train = Distance/ / time taken
So,172*5/18 = 47.77 m/s
= 47.77/320
= 6.69m/ s
So, speed = 6.69m/s
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