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 acting on an object in motion).

Front

How does surface texture affect friction?

Back

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

Front

What happens to friction when a surface is wet?

Back

Friction usually decreases when a surface is wet because the water creates a slippery layer between the surfaces.

Front

Why do we use sand on icy roads?

Back

We use sand on icy roads to increase friction, helping cars to grip the road better and preventing slipping.

Front

What is the role of friction in sports?

Back

Friction helps athletes maintain grip and control over surfaces, which is essential for performance in sports.

Front

How can friction be both helpful and harmful?

Back

Friction is helpful for walking and driving, but it can be harmful by causing wear and tear on objects and generating heat.

Front

What is an example of a situation where friction is beneficial?

Back

Friction is beneficial when walking, as it prevents slipping and allows us to move forward.

Front

What is an example of a situation where friction is harmful?

Back

Friction can be harmful in machinery, where it can cause parts to wear out quickly.

Front

What is the effect of weight on friction?

Back

In general, the more weight an object has, the more friction it will experience when in contact with a surface.