Reaction force: The ground pushes the skateboard backward

Did you know that Sir Isaac Newton, 1643-1727, was an English scientist, mathematician, and astronomer? He came up with the three laws. Newton´s first law is about Inertia. Newton´s second law is about acceleration. Newtons third law as im going to write about on this web page is about action-reaction force. Newton’s discoveries in the scientific world are the bases of all science today.