In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?
Pick one
A) 2.5 sec  B) 4.25 sec  C) 5 sec  D) 12.5 sec  E) 3 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 120/40= 
<gadget id="calculator">120/40</gadget>
<output>3</output>
3.0 sec.   ANSW3 secR:3 sec
<result>E</result>
In what time will a train 120 m long cross an electric pole, it its speed be 144 km/hr?