Intro to Forces

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

In which direction does friction act in relation to movement?

Back

Friction acts in the opposite direction of movement.

Front

What is an applied force?

Back

An applied force is a force that is applied to an object by a person or another object.

Front

What is the frictional force?

Back

The frictional force is the force that resists the motion of an object sliding or rolling over a surface.

Front

What is tension force?

Back

Tension force is the force transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends.

Front

What is normal force?

Back

Normal force is the support force exerted upon an object that is in contact with another stable object.

Front

What is air resistance?

Back

Air resistance is a type of frictional force that acts against the motion of an object moving through air.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic friction acts on objects that are sliding over each other.

Front

What factors affect the amount of friction between two surfaces?

Back

The amount of friction depends on the nature of the surfaces in contact and the force pressing them together.

Front

What is the role of friction in everyday life?

Back

Friction allows us to walk without slipping, enables cars to grip the road, and is essential for holding objects in place.