## 06 Work Energy Power

### Bouncing Ball

**Recap**: Describe the motion of the bouncing ball

**Recap**: Sketch s-t, v-t and a-t graphs

**Explain**:

- Describe the conversion of energies during the motion from point of release to just before hitting the surface
- Explain why the returned height after each bounce is less

**Task**: To investigate the height of bounce

- Investigate whether the reduction in returned height is due to the following two possible theory or due to other relations?
- constant ratio of height reach after bounce to max height before bounce
- constant ratio of velocity immediately after bounce to velocity immediately before bounce
- What could be the mathematical difference between the two theories?

**Knowledge to complete activity**

- Conservation of energy
- Kinetic and potential energy