A train is running at a speed of 40 km/hr and it crosses a post in 25.2 seconds. What is the length of the train? Options.
A) 190 metres  B) 160 metres  C) 280 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 = 25.2 s   Distance 280 metresovered, d = vt = (400/36)Ã— 25.2 = 280 m   Distance covered is equal to the length of the train = 280 m   280 metresorrect answer is 280 metres   280 metres
<result>C</result>
A train is running at a speed of 40 km/hr and it crosses a post in 25.2 seconds. What is the length of the train?