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For a two body system in absence of ext...

For a two `` body system in absence of external forces, the kinetic energy as measured from ground frame is `K_(0)` and from centre of mass frame is `K_(cm)`. Pick up the wrong statement.

A

The kinetic energy as measured from center of mass frame is least.

B

Only the portion of energy `K_(cm)` can be transformed from one form to another due to internal changes in the system when KE is measured in ground frame.

C

The system always retains at least `K_(0)-K_(cm)` amount of kinetic energy as measured from ground frame irrespective of any kind of internal changes in the system.

D

The system always retains at least `K_(cm)` amount of kinetic energy as measured from ground frame irrespective of any kind of internal changes in the system.

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The correct Answer is:
A
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