Friday, September 14, 2012

Newton's Third Law

Also known as action-reaction law, Newton's third law states that for every action exerted on a body, there is an equal and opposite reaction, that is to say a force that goes in the opposite direction. This law is put in practice in rocket propulsion, when matter in gas form is forced out of the combustion chamber at very high speeds, it creates a reaction: an equal force that moves in the opposite direction, pushing the rocket upward.