Physics, asked by amandev5467, 1 year ago

A 150 meter long train crosses a man walking at a speed of 6km/ h in the opposite direction in 6 seconds what is tge speed od train

Answers

Answered by TheUrvashi
14
Hello, 


Let 'v' be the speed of the train with respect to the ground. The velocity of the man with respect to ground is -6 km/h (negative sign is included because the man and the train are moving in opposite directions). So, the velocity of the man with respect to the train is [v - (-6)] = (v + 6) km/h 


Time taken by the man to cross the 0.15 Km train is = 6 s = (6/3600) h 


Using, Distance = speed X time 0.15 = (v + 6) X (6/3600)


Implies, v = 84 Km/h


So, the speed of the train is 84 Km/h.

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