A train of length I = 350 m starts moving rectilinearly with
constant acceleration w = 3.0-10-2 m/s2; t = 30 s after the start
the locomotive headlight is switched on (event 1), and t = 60 s after
that event the tail signal light is switched on (event 2). Find the distance
between these events in the reference frames fixed to the train and to the
Earth. How and at what constant velocity V relative to the
Earth must a certain reference frame K move for the two events to occur in it at
the same point?