Wood. There is less friction.
On a smooth surface because there is less friction to slow it down.
Surface material can impact how far a toy car will roll. Smooth surfaces like hardwood floors or concrete allow for less friction and the car can roll farther. Rough surfaces like carpet or grass create more friction, slowing down the car and reducing the distance it can travel.
Both because heavy cars go farther down a hill. The light car go farther on regular flat surface.
A smoother surface, such as polished wood or plastic, will help reduce friction and allow the toy car to go down the ramp faster. Avoid surfaces with a lot of texture or resistance, like carpet or rough concrete, as they will slow down the car's movement.
Kerosene smell car carpet
AnswerWith mdf wood, woodscrews(not actually made of wood), saw, drill, carpet(for car boxes). check out this site for accurate designs http://www.caraudiohelp.com/plans_for_subwoofer_enclosures/plans_for_subwoofer_enclosures.htm
How expensive is it to remove mold from fabric seats and carpet in car?
2
You don't
Depends on what car you are asking about.
Carpet