In how much time will a train of length 100 m, moving at 54 kmph cross an electric pole?  Select:
A) sec B) sec C) sec D) sec E) sec
Convert kmph to mps. 54 kmph = 54 * 5/18= 
<gadget id="calculator">54 * 5/18</gadget>
<output>15</output>
15 mps.   The distance to be covered is equal to the length of the train.   Required time t= d/s = 100/15= 6.7 sec.   Answer:sec
<result>D</result>
In how much time will a train of length 100 m, moving at 54 kmph cross an electric pole?