In what time will a train 80 m long cross an electric pole, it its speed be 144 km/hr?
Choose the correct choice from the following answers:
A) 2.0 sec
B) 2.8 sec
C) 7.5 sec
D) 2.3 sec
E) 1.5 sec
Speed = 144 * 5/18= 
<gadget id="calculator">144 * 5/18</gadget>
<output>40</output>
40 m/sec   Time taken= 80/40= 
<gadget id="calculator">80/40</gadget>
<output>2</output>
2.0 sec.   2.0 secnswer:2.0 sec
<result>A</result>
In what time will a train 80 m long cross an electric pole, it its speed be 144 km/hr?