In what time will a train 100 metres long cross an electic pole, if its speed be 144 km/hr?

In what time will a train 100 metres long cross an electic pole, if its speed be 144 km/hr?

Quiz

Answer/Solution

2.5 sec

Steps/Work

Sol.
Speed = [144x5/18] m/sec = 40 m / sec.
Time taken = (100/40)sec = 2.5 sec.
Answer A