What does the work-energy principle state?

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy. This principle is foundational in mechanics and demonstrates how energy transfer occurs in a system. When a net force acts on an object, it causes the object to accelerate and change its velocity, leading to a change in kinetic energy.

Mathematically, this can be expressed as the work done (W) being equal to the difference in kinetic energy (ΔKE) of the object: W = ΔKE. If a net positive work is done on an object, its kinetic energy increases; conversely, if negative work is done, the kinetic energy decreases.

This principle helps in analyzing various physical situations where forces influence the motion of objects and provides a clear understanding of the relationship between work and energy.