Newton’s Second law – Acceleration is directly proportional to net force and inversely proportional to mass

Newton's Third Law- every action has an equal and opposite reaction

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

Figure 1.8
Vocab
Action- The air inside of a balloon pushes backwards
Reaction- The air outside of the balloon pushes forwards on the balloon.Nasa Quest

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

Force – a push or a pull

Mass - The amount of matter in an object

Newton - the SI Unit for force

Figure 2.0

Sir Isaac Newton was the great man in which Newtons are named after. Wikipedia

Acceleration - he rate at which an object's velocity changes with time

Net Force - The combined forces acting on an object.