Friction & Forces Review (24-25)

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 (preventing motion) and kinetic friction (opposing motion when objects are sliding).

Front

How can friction be reduced?

Back

Friction can be reduced by making surfaces smoother, using lubricants (like oils or wax), or changing from sliding to rolling friction.

Front

What is the effect of surface roughness on friction?

Back

Rough surfaces have greater friction compared to smoother surfaces.

Front

What factors determine the amount of friction between two objects?

Back

The amount of friction is determined by the force pressing the objects together and the roughness of the surfaces in contact.

Front

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

Back

As the weight of an object increases, the friction between the object and the surface also increases.

Front

What is an example of an unbalanced force?

Back

An example of an unbalanced force is when a person pushes a stationary car, causing it to move.

Front

What is the relationship between friction and motion?

Back

Friction opposes motion, meaning it acts in the opposite direction to the movement of an object.

Front

How does rolling friction compare to sliding friction?

Back

Rolling friction is generally less than sliding friction, making it easier for objects to roll than to slide.

Front

What is the maximum friction scenario?

Back

The maximum friction occurs when a rough object moves over a rough surface.