Forces and Motion

Position refers to the location of an object in relation to a reference point.

A force is a push or a pull that can cause an object to move, stop, or change direction.

A push moves an object away from you, while a pull moves an object closer to you.

The two types of forces are contact forces (like friction) and non-contact forces (like gravity).

Forces can change the speed or direction of an object's motion.

Friction is an example of a contact force that opposes the motion of an object.

Gravity is an example of a non-contact force that attracts objects toward each other.

Gravity pulls objects toward the center of the Earth, affecting their motion.

The greater the mass of an object, the more force is required to change its motion.

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