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A ball of mass 2 kg and another of mass ...

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

A

`sqrt2:1`

B

`1:4`

C

`1:2

D

`1:sqrt2`.

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