Front

What is a force?

Back

A push or a pull on an object.

Front

What is an example of a push?

Back

Any action that moves an object away from a source.

Front

What is a balanced force?

Back

When the forces exerted on opposite sides of an object are equal in strength.

Front

What is an unbalanced force?

Back

When the forces exerted on opposite sides of an object are not equal in strength.

Front

What is friction?

Back

A force exerted between the surfaces of objects in contact with one another.

Front

What are the two main types of forces?

Back

Contact forces and non-contact forces.

Front

What is an example of a non-contact force?

Back

Gravity.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object, slowing it down or stopping it.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the greater the force needed to accelerate it.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.