an object of m mass is moving with velocity v how muvh word should be done on object in order to bring it into rest
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Answer: the object is in motion, so its energy = kinetic energy = 1/2 mv^2
the kinetic energy of the object, when it comes to rest = 0
work is done on object = change in kinetic energy
= 1/2mv^2 - 0
= 1/2 mv^2
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