How is the kinetic energy of a moving object affected if the net work

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How is the kinetic energy of a moving object affected if the net work done on it is positive ?

Decreases
Increases
Remains constant
Becomes zero
This question was previously asked in
UPSC NDA-2 – 2016
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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.
Conversely, if the net work done is negative, the kinetic energy decreases. If the net work done is zero, the kinetic energy remains constant (although the velocity vector might change direction, the speed and thus KE remain the same).

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