For a passenger of a train
it does not make any difference whether the train is at rest
or whether the train is moving
with a constant velocity,
meaning that the train moves all the time with
the same speed
and in the same direction.
Objects fall exactly the same way as they do when the train is stopped.
Consequently, this case is exactly the same as the case
of the train at rest which we have studied in the previous pages.
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