MK.U1.L2 Gravity & 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

How can you reduce friction?

Back

You can reduce friction by reducing surface area or using lubricants.

Front

What is gravity?

Back

Gravity is the attractive force that exists between all objects that have mass.

Front

How does mass affect gravity?

Back

The greater the mass of an object, the stronger its gravitational pull.

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas).

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from moving.

Front

What is sliding friction?

Back

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

Front

What happens to gravity as distance increases?

Back

As the distance between two objects increases, the gravitational force between them decreases.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass.

Front

What is an example of contact force?

Back

A bat hitting a baseball is an example of a contact force.