Question

A boy is sitting in a train looking out the window at another train a few feet away. Both trains have
stopped at a station. Slowly, one of the trains starts to move, but the boy cannot tell if it is his train
or the other one. What can he do to tell which train is moving?​

Answer 1

Answer:

if ur train is moving then after some time u won't see the other train bcz it maybe of some length

Explanation:

or in a simple way just throw something out of the train if it falls straight down then ur train is not in motion

okk

Answer 2

Answer:

see if a coin fall straight down