A train is running at a speed of 40 km/hr and it crosses a post in 18 seconds. What is the length of the train?

190 m

160 m

200 m

120 m

Speed of the train, v = 40 km/hr = 40000/3600 m/s = 400/36 m/s Time taken to cross, t = 18 s Distance Covered, d = vt = (400/36)× 18 = 200 m Distance covered is equal to the length of the train = 200 m

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