A train is running at a speed of 40 km/hr and it crosses a post in 17.1 seconds. What is the length of the train?
Pick one:  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 = 17.1 s   Distance Covered, d = vt = (400/36)Ã— 17.1 = 190 m   Distance covered is equal to the length of the train = 190 m   Correct answer is 190 metres   190 metres
<result>A</result>
A train is running at a speed of 40 km/hr and it crosses a post in 17.1 seconds. What is the length of the train?