In what time will a train 100 m long cross an electric pole, it its speed be 162 km/hr?  Choose the correct answer.
A) 2.5 sec  B) 2.8 sec  C) 8.5 sec  D) 2.2 sec  E) 4.5 sec
Speed = 162 * 5/18= 
<gadget id="calculator">162 * 5/18</gadget>
<output>45</output>
45 m/sec   Time taken= 100/45   = 2.2 sec.   Answer:2.2 sec
<result>D</result>
In what time will a train 100 m long cross an electric pole, it its speed be 162 km/hr?