Newton's Laws of Motion

Law of Inertia, Acceleration, Action/Reaction

Newton's First Law

Newton's first law states that an object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an outside force. This also means that if there in no net force resulting from unbalanced forces acting on the object then the object will maintain a constant velocity, if the object is zero then the object will remain at rest. The motion of a kite when the wind changes it direction is one of many examples of the first law.

Newton's Second Law

Newton's second law states that force = mass x acceleration. Which means that how ever much the objects mass is times its acceleration determines how much force is exerted on that object. The second law talks about changes in momentum. This law also states that the acceleration of an object depends on the net force acting on the object and on the mass of the object. If the force acting on the object is increased, the acceleration of the object is increased. As the mass of the object is increased, the acceleration increases.

Newton's Third Law

Newton's third law which is every action has an equal or opposite reaction, this means that anything that you do either has an equal reaction or an opposite one. This means that in every interaction there is a pair of forces acting on the two interacting objects. The size of the force on the first object is the size of the force on the second object. No matter what forces always come in pairs, equal and opposite action reaction. For example a bird flying through the air, the bird flies by using its wings. The wings of the bird push the air downwards since the wings are the action the reaction must be that the air is pushing or holding the bird up. If the bird flaps its wings faster then the air will push it up faster and vice versa.