A train passes an observer standing on a platform. The first carriage of the train passes the observer during time interval t1=1 sec, and the second during time interval t2=1.5sec. Find the velocity of the train at the beginning and at the end of the observation and its acceleration assuming that motion of the train the uniformly variable(i.e, acceleration is constant) The length of each carriage is l=12m.
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constantly acceleration will be divide to its length of carriage x its speed
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