Question

What is friction

Answer 1

Friction is the force between two surfaces rubbing together.
Friction always act in the opposite direction to the intended movement of any object.

So if a car is moving forwards, friction must act in the opposite direction along the road's surface where the tyre touches the road.

Friction always slows a moving object down.

The amount of friction and how much the object slows down, depends on the type of surface.

A smooth surface creates little friction and objects can move over it easily.

So a skater can glide across a smooth ice rink and a bowling ball can slide down a polished lane.

A rough surface creates lots of friction.

That's why car tires can grip the rough surface of the road.

But if the road gets icy, it becomes smoother.

There is less friction between the road and the wheels, and a car is more likely to skid.