Friction

Front

What is friction?

Back

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

Front

What does friction depend on?

Back

Friction depends on the weight of the objects pressing together and the nature of the surfaces in contact.

Front

What are lubricants?

Back

Lubricants are substances that reduce friction between surfaces, examples include oil, grease, and powder.

Front

Is friction a contact force?

Back

Yes, friction is a contact force because it occurs when two surfaces are in physical contact.

Front

What happens to an object in motion without friction?

Back

Without friction, an object in motion would continue to move indefinitely and would never stop.

Tags

NGSS.MS-PS3-1

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

How can friction be reduced?

Back

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

Front

What is the role of friction in everyday life?

Back

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

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects at rest, while kinetic friction acts on objects in motion.