Lesson 1: Newton’s First Law of Motion. Inertia - the tendency of all objects to resist any change in motion. It has a direct or linear relationship to mass. The greater the mass o... Lesson 1: Newton’s First Law of Motion. Inertia - the tendency of all objects to resist any change in motion. It has a direct or linear relationship to mass. The greater the mass of an object, the greater the inertia of an object. An object at rest will remain at rest until a force makes it move. Inertia is the reason a moving object stays in motion with the same velocity unless a force changes its speed or direction. Gravity - force of attraction. The force of attraction between any two masses. Gravity depends on the masses of two objects and the displacement between them. One of the weakest forces in the universe. Force exerted by every object in the universe on every other object. Law of Universal Gravitation. All objects in the universe attract each other through gravitational force. The size of the force depends on the masses of the objects and the distance between the objects. Gravitational force increases as mass increases. Gravitational force decreases as distance increases. Newton's 1st Law of Motion. Inertia - an object at rest stays at rest and an object in motion stays in motion with the same speed and direction unless acted upon by an unbalanced force. 2 clauses and a condition. One that predicts the behavior of stationary objects. One that predicts the behavior of moving objects. Unless acted by an unbalanced force. Lesson 2: Newton’s Second Law of Motion. Force - interaction between two objects that causes a change in the motion of the objects. Inertia - an object will either stay at rest or continue moving in a straight line at a constant speed. Acceleration - The change in the speed or direction of an object’s movement. Acceleration = change in velocity / time. Law of Acceleration. The acceleration of an object by a force is inversely proportional to the mass of the object and directly proportional to the force. Forces are unbalanced = there is an acceleration. Lesson 3: Third Law of Motion. Law of Interaction - for every action, there is an equal and opposite reaction. Lesson 4: Work, Power, and Energy. Work - the energy transferred when force exerted to move an object a certain distance. Work is done if the force and displacement are in different directions. Work = F ⋅ D. Power - the rate of doing work; how fast or how slow work is done. Power = W / T. Lesson 5: Kinetic Energy and Potential Energy. Potential Energy - stored energy or energy by the virtue of its position. PE = mgh. Elastic Potential Energy - stored energy in a spring. EE = ½ kx². The Law of Conservation of Energy. Energy can neither be created nor destroyed. Lesson 6: Light and Sound. Sound - a wave that carries energy. Light/Visible Light - part of the electromagnetic spectrum of waves. Mediums of Light. Lesson 7: Electricity. Electricity - type of energy caused by small, negatively charged particles called electrons. Current - flow of electrons. Resistance - a restriction to the flow of electrons. Circuit - composed of an energy source, a conductor, an electrical load (and switch). Read more