yes
Yes, it keeps them on the road.
Friction and Gravitational forces
Cars don't get better gas or mileage.
Two kinds of friction affecting mousetrap cars are rolling friction, which occurs when the wheels of the car roll on a surface, and sliding friction, which occurs when the moving parts of the car rub against each other or the surface. Both types of friction can affect the speed and efficiency of the mousetrap car.
The two types of friction affecting mouse trap cars are rolling friction, which occurs when the wheels of the car are in contact with the surface, and sliding friction, which occurs between the moving parts of the car, such as the axles and the mousetrap mechanism. These frictional forces can affect the efficiency and speed of the mouse trap car.
friction
We would need to know what the friction is to affect to respond to this question.
ice can affect friction
Speed does not affect the force of friction.
Static friction between the wheels and the ground helps provide traction for the mousetrap car to move forward. Rolling friction between the wheels and the axles can also affect the efficiency of the car's movement.
it knackers up the tyres. this is because the wheels are moving at a phenomenal rate and creates friction on the tarmac. to get and understanding of what it feels like rub your hands together hard. now think of this 5000x a second.