Question

A train running at the speed of 40 km/hr crosses a signal pole in 9 seconds. find the length of the train ?

Answer 1

To convert speed in kmph to m/s multiply it by 5/18
So,
40 kmph = 40 × 5/18 m/s = 200/18 m/s = 100/9 m/s

Distance = Speed × Time
= (100/9 m/s) × (9 s)
= 100 m

Length of the train is 100 m