How is the kinetic energy of a moving object affected if the net work done on it is positive ?
[amp_mcq option1=”Decreases” option2=”Increases” option3=”Remains constant” option4=”Becomes zero” correct=”option2″]
This question was previously asked in
UPSC NDA-2 – 2016
If the net work done on a moving object is positive, its kinetic energy increases.
This is directly explained by the Work-Energy Theorem, which states that the net work (W_net) done on an object by external forces is equal to the change in its kinetic energy (ΔKE): W_net = ΔKE = KE_final – KE_initial. If W_net is positive, then ΔKE must be positive, meaning KE_final > KE_initial. Therefore, the kinetic energy increases.