# Introduction to Work-Energy

When a car speeds up, it gains kinetic energy due to work done on it.

When the car slows down, it loses kinetic energy due to work done on it.

Work is the change in kinetic energy and is expressed as Work = ΔKE

Let's summarize all three :

- Kinetic Energy, KE = ½mv
^{2}
- Potential Energy, PE = mgh.
- Work = ΔKE

### Exercise

*Exercise on Work-Energy *

Check your answers here:
*Solution to the Work-Energy Exercise *

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Date of last modification: 2021