[" Question "7],[" The total work done on a particle is equal to the change in its kinetic energy "],[" o always "],[" only if the forces acting on the body are conservative "],[" o only in the inertial frame "],[" only if no external force is acting "]

The total work done on a particle is equal to the change in its kinetic energy

The total work done on a particle is equal to the change in its mechanical energy

The work done by the external forces on a system equals the change in

When work is done on a body by an external force, its

If the force acting on a body is inversely proportional to its speed, the kinetic energy of the body is

A : The change in kinetic energy of a particle is equal to the work done on it by the net force. R : The work-energy theorem can be used only in conservative field.

Statement -1: The work done by all forces on a system equals to the change in kinetic energy of that system . This statement is true even if nonconservative forces act on the system. Statement -2: The total work done by internal forces may be positive.

STATEMENT-1: Work done by the net force acting on a particle is equal to the change in its kinetic energy. STATEMENT-2: Change in potential energy is always equal to the work done by external forces. STATEMENT-3: Work energy theorem is not applicable, if the work is done by the non-conservative forces