A ball of mass \[2\,\,kg\] and another of mass \[4\,\,kg\] are dropped together from a \[60\] feet tall building. What will be the ratio of their kinetic energies after a fall of \[30\] feet?

A ball of mass \[2\,\,kg\] and another of mass \[4\,\,kg\] are dropped

1.	A ball of mass \[2\,\,kg\] and another of mass \[4\,\,kg\] are dropped together from a \[60\] feet tall building. What will be the ratio of their kinetic energies after a fall of \[30\] feet?
A.	\[\sqrt{2}:1\]
B.	\[1:4\]
C.	\[1:2\]
D.	\[1:\sqrt{2}\]
Answer» D. \[1:\sqrt{2}\]

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A ball of mass \[2\,\,kg\] and another of mass \[4\,\,kg\] are dropped together from a \[60\] feet tall building. What will be the ratio of their kinetic energies after a fall of \[30\] feet?

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