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[" A trolley accelerates uniformly from ...

[" A trolley accelerates uniformly from rest and "],[" acquires the speed of "72kmh^(-1)" on moving "200m],[" distance,henceforth breaks are applied so that "],[" it retards the trolley at a rate which is "],[" proportional to the velocity,until its speed is "],[" halved,by covering "400m" distance further.The "],[" total time of motion described of the trolley "],[" from the start (approximately) "]

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