Force of Friction (Ff)

Front

What is the force of friction (Ff)?

Back

The force that opposes the relative motion of two surfaces in contact.

Front

What factors affect the force of friction?

Back

The weight of the objects pressing together and the nature of the surfaces in contact.

Front

What is static friction?

Back

The frictional force that prevents two surfaces from sliding past each other when at rest.

Front

What is sliding friction?

Back

The frictional force that opposes the motion of two surfaces sliding past each other.

Front

What is rolling friction?

Back

The frictional force that opposes the motion of an object rolling over a surface.

Front

What is fluid friction?

Back

The frictional force experienced by an object moving through a fluid (liquid or gas).

Front

How does the weight of an object affect friction?

Back

Increased weight leads to increased friction because the normal force is greater.

Front

What is the standard unit of frictional force?

Back

Newton (N).

Front

What is the direction of the force of friction relative to motion?

Back

The force of friction acts in the opposite direction of motion.

Front

What is kinetic friction?

Back

The frictional force acting between moving surfaces.