Friction and gravity

Front

What is friction?

Back

The force that two surfaces exert on each other as they rub against each other.

Front

What are two factors that affect friction?

Back

Types of surfaces and how hard they are pushed together.

Front

What is sliding friction?

Back

The friction that occurs when two solid surfaces slide over each other.

Front

What two things determine the gravity of an object?

Back

Mass and distance.

Front

What keeps the planets in orbit around the sun?

Back

Gravity.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is static friction?

Back

The friction that prevents two surfaces from sliding past each other.

Front

What is rolling friction?

Back

The friction that occurs when an object rolls over a surface.

Front

What is fluid friction?

Back

The resistance encountered by an object moving through a fluid (liquid or gas).

Front

How does mass affect friction?

Back

Greater mass increases the force pressing surfaces together, resulting in higher friction.