yes
work is movement, and all movement causes friction, since there is no such thing as a "perfect" or "100% efficient" tool yet.
Yes, it keeps them on the road.
able to slow down
there could be friction inside the motor. there is friction on the wheels of the scooter and the ground. there is air friction when you move on a scooter.
Friction provides a force, and therefore an acceleration, in the opposite direction of motion.
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.
Friction and Gravitational forces
Friction opposes the movement of objects by generating a force that resists the motion. It can cause objects to slow down, come to a stop, or require more energy to maintain their speed. Overall, friction reduces the efficiency of movement.
It slows it down, and causes MPG to drop.
As water in the stream channel flows, it encounters friction; the friction slows the forward movement. The shape,size, and roughness affect the amount of friction. High friction slows the stream significantly.
Magnetic friction can either attract or repel objects, which can slow down or speed up their movement. This friction is caused by the interaction between magnetic fields and the objects, influencing their motion.
It acts like friction in mechanical systems.