Friction and Gravity

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 (when an object is not moving) and kinetic friction (when an object is moving).

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What happens to the gravitational force as mass increases?

Back

As mass increases, the gravitational force also increases.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of two surfaces sliding past each other.

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of a rolling object, such as a wheel or ball.

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

How does surface roughness affect friction?

Back

Rough surfaces have more friction compared to smooth surfaces due to increased contact area.

Front

What is the relationship between air resistance and gravity when an object is falling at a constant speed?

Back

When an object is falling at a constant speed, air resistance is equal to gravity.