Concepts Of Physics MCQ Edition [Volume 1]PhysicsWork and Energy

For a system, the work done by all forces (both internal and external) is equal to the change in its

Options

Atotal energy
Bpotential energy
Ckinetic energy
Dmechanical energy

Correct answer

C. kinetic energy

Step-by-step solution

According to the work-energy theorem, the total work done by all the forces (whether internal or external, conservative or non-conservative) acting on a system is equal to the change in its kinetic energy. W_ all = K Therefore, the work done by all forces is equal to the change in kinetic energy.

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