Question

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

Answer 1

total dist. to cross the pole = width of pole + length of train
here length width of pole is very minute (10cm approximately) compare to train
therefore total length= length of train only

total dist. to cross the pole = speed ×time
width of pole + length of train =speed ×time
length of train = speed ×time

speed = 60 km/h=16.66m/s

d= 16.66×9
= 150(approx) m