1.

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

Answer»

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

Answer :A


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