# Using motion parts

Motion parts can be used in a Motion space or a Scene.

Tips for use:

- Balls and Blocks can be used for free-body experiments or joined using Rods for rigid-body systems.
- You can add a ground to provide a gravitational force.
- Add air resistance by changing the medium of the motion space to air and adding a drag coefficient to a ball.

## See also:

- Using parts
- Balls and Blocks
- Rods, Springs and Strings
- Ground
- Motion space