work-energy theorem

Question

Net work done on an object equals change in:

RankGuru · Accepted Answer

The **Work-Energy Theorem** states that the work done by the net force (sum of all forces) acting on an object is equal to the change in its kinetic energy:
$W_{net} = \Delta K = K_{final} - K_{initial}$
- Positive net work increases kinetic energy (speed up).
- Negative net work decreases kinetic energy (slow down).
- This theorem applies even for variable forces and curved paths.

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Net work done on an object equals change in: