Flashcards › vocab wk 1-4 review

velocity speed in a particular direction gravity attraction between 2 masses acceleration increasing speed Newton's First law of motion Objects remain at rest until they are acted upon by a force Newton's Second law of motion For an object of certain mass, the greater the force applied to the object, the greater it's increase in velocity over time Newton's Third law of motion For every action, there is an equal and opposite reaction lever simple machine used to change the direction of motion and/or to increase either force or distance of a motion fulcrum the pivot point of a lever where the direction of motion changes potential energy energy stored in an object to do work kinetic energy energy of motion Law of Conservation of Energy energy is neither created nor destroyed but is transferrable from one form to another 3 kinds of energy light, heat, chemical bonds mass quantity (amount) of matter matter that which occupies space and possesses mass resistances device that converst electrical energy to heat energy by collisions among the atoms and the electrons that flow through it fossil fuels fuel thought to have arisen over time from the decay of biomass beneath the surface of the earth electromagnetism electric or magnetic attractions between two objects either opposite charges or opposite poles acceleration increase in velocity over time velocity the speed and direction in which something is moving use this to study the words for lessons 1-10