- A ball is a kind of object
- Rolling is a kind of motion
- Therefore, a ball rolling is an example of object in motion

- A ball rolling is an example of object in motion
- An example of an object with kinetic energy is an object in motion
- Therefore, a ball rolling is an example of kinetic energy

Hence, a ball rolling is an example of kinetic energy
Q: Which is an example of kinetic energy?
Context:
- An example of an object with kinetic energy is an object in motion 
- A ball is a kind of object 
- Rolling is a kind of motion