1.

A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 m tall building. After a fall of 30 m, their respective kinetic energies will be in the ratio of:

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A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 m tall building. After a fall of 30 m, their respective kinetic energies will be in the ratio of:



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