Question

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

Answer 1

Answer:

25seconds

Step-by-step explanation:

distance=500metre

speed=72km/he

first we have to change speed kilometre/ hour into metre per second

so, for this we have to multiply 72 by 5/18

=20m/s

now,time taken to cross a telegraph post =distance/speed

500/20=25seconds