In what time will a train 100 m long cross an electric pole, it its speed be 216 km/hr? Select.
A) 2.5 sec B) 2.9 sec C) 1.7 sec D) 7.5 sec E) 2.4 sec
Speed = 215 * 5/18 = 60 m/sec   Time taken = 100/60   = 1.7 sec.   Answer: 1.7 sec
<result>C</result>
In what time will a train 100 m long cross an electric pole, it its speed be 216 km/hr?