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

According to the work-energy theorem, the net work done on an object is equal to the change in its kinetic energy [1]. This relationship is mathematically expressed as W_net = ΔK, where ΔK represents the final kinetic energy minus the initial kinetic energy. If the net work done on a moving object is positive, it implies that the energy input into the system is positive, leading to an increase in the object's kinetic energy [1]. Conversely, if the net work were negative, the kinetic energy would decrease. This principle is derived from Newton's laws and applies to all forces acting on a particle. Therefore, when positive work is performed, the object's speed increases, resulting in a direct increase in its translational kinetic energy [1].

Sources

1. [1] https://www.khanacademy.org/science/in-in-class-11-physics-cbse-hindi/in-in-11-work-energy-and-power-hindi/kinetic-energy-hindi/a/what-is-kinetic-energy