Friction

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What are the two main types of friction?

Back

The two main types of friction are static friction (the force that keeps an object at rest) and kinetic friction (the force that opposes the motion of a moving object).

Front

How does surface texture affect friction?

Back

Rough surfaces create more friction than smooth surfaces because they have more irregularities that grip against each other.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of an object that is already moving.

Front

What happens to friction when the weight of an object increases?

Back

As the weight of an object increases, the frictional force also increases because there is more force pressing the surfaces together.

Front

What is the role of friction in everyday life?

Back

Friction allows us to walk without slipping, cars to grip the road, and objects to stay in place.

Front

How can friction be reduced?

Back

Friction can be reduced by using lubricants, smoothing surfaces, or using wheels.

Front

What is the effect of friction on motion?

Back

Friction slows down or stops the motion of objects, making it necessary to apply more force to keep them moving.

Front

What is an example of high friction?

Back

An example of high friction is a car driving on a gravel road.