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? Pick.
A) 190 metres
B) 160 metres
C) 200 metres
D) 120 metres
E) 250 metres
Speed of the train, v = 40 km/hr = 40000/3600 m/s = 400/36 m/s   Time taken to cross, t = 18 s   Distance 200 metresovered, d = vt = (400/36)× 18 = 200 m   Distance covered is equal to the length of the train = 200 m   200 metresorrect answer is 200 metres
<result>C</result>
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?