Weight at the most is 1 kg for the potato and add-ons together. I have to make the materials. They cannot be premade axels or wheels. So what might help me is, List of materials that are light-weighted that can be also used to make a fast potato car. The potato is set on top of a mini ramp and let it fall down on its own. So I think i need some good frictionless materials so that it will travel the fastest and farthest? If you have any other suggestions it would also help.
This is for a physics lab
This is for a physics lab