Contact Forces

Front

What is a contact force?

Back

A contact force is a force that acts at the point of contact between two objects.

Front

What is friction?

Back

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

Front

What is the unit of force?

Back

The unit of force is Newtons (N).

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 magnetic force?

Back

Magnetic force is a contact force that acts between magnets or magnetic materials.

Front

What is electrical force?

Back

Electrical force is a contact force that acts between charged objects.

Front

How does friction affect motion?

Back

Friction can slow down or stop the motion of an object.

Front

What factors affect the amount of friction?

Back

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

Front

What is the difference between static and kinetic friction?

Back

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

Front

Can friction be beneficial?

Back

Yes, friction is beneficial as it allows us to walk without slipping and helps vehicles to stop.