A train 150 m long pass a telegraph pole in 5 seconds. Find the speed of the train Select:  A) 66 km/hr  B) 108 km/hr  C) 72 km/hr  D) 79.2 km/hr  E) None
Sol.   Speed = [150/5] m/sec = [30 * 18/5] km/hr = 108 km/hr.   Answer 108 km/hr
<result>B</result>
A train 150 m long pass a telegraph pole in 5 seconds. Find the speed of the train