Newton's First Law of Motion

Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.

Newton's Second Law of Motion

The acceleration produced by a net force on an object is directly proportional to the magnitude of the net force, is in the same direction as the net force and is inversely proportional to the mall of the object.

Newton's Third Law of Motion

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.

Mass

A measure in an object's inertia; also the measure of the amount of matter in an object.

Force

Any influence that tends to accelerate an object; a push or a pull.

Acceleration

The rate at which velocity is changing.

Interaction

A mutual action between objects where each object exerts an equal and opposite force on the other.

Action Force

One of the pair of forces described in Newton’s third law.

Reaction Force

The force that is equal in strength and opposite in direction to the action force, which acts simultaneously on whatever is exerting the action force.