Physics - Center of Mass Question with Solution | TestHub

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

Only the portion of energy ${\mathrm{K}}_{\mathrm{cm}}$ can be transformed from one form to another due to internal changes in the system.

The system always retains at least ${\mathrm{K}}_0-{\mathrm{K}}_{\mathrm{cm}}$ 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 ${\mathrm{K}}_{\mathrm{cm}}$ amount of kinetic energy as measured from ground frame irrespective of any kind of internal changes in the system.