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 friction that prevents motion) and kinetic friction (the friction that occurs when objects are moving).

Front

How can friction be reduced?

Back

Friction can be reduced by making surfaces smoother, using lubricants like oils or wax, and using wheels.

Front

What happens to friction when surfaces are rough?

Back

Rough surfaces have greater friction compared to smoother surfaces.

Front

What is the effect of temperature on friction?

Back

Higher temperatures can reduce friction in some materials, while in others, it can increase it.

Front

What is the unit of force?

Back

The unit of force is Newtons.

Front

Which surface would a toy car travel the furthest on?

Back

A toy car would travel the furthest on ice due to lower friction.

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 two surfaces sliding past each other.

Front

How does weight affect friction?

Back

In general, greater weight increases the frictional force between two surfaces.