Question

A train 500m long is running at a speed of 72 km/hr. How much time does it take to cross a

telegraph post?​

Answer 1

Answer:

If train has to cross a person/tree/telegraph post/post etc, distance it has to cover = length of train itself.

Distance = 500 m

Speed = 72 kmph = 20 metres per sec

Time = D / S

= 500/20

= 25 seconds.