Question

A train, 400 m long crosses an electric pole in 12 sec. Find the speed of the train in km/hr.

Answer 1

$Speed=\frac{Distance}{Time}$

for given values

$Speed=\frac{400}{12}m/s=\frac{400}{12}\left(\frac{18}{5}\right)=120km/hr$

$(1km/hr=\frac{5}{18}m/s)$