Details Title: Chapter 4: Newton's 1st Law Description: Newton's first law of motion-intertia Total Flash Cards: 18 Created: 02/23/2009 17:27:20		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term 2 Types of Motion by Aristotle Definition natural motion and violent motion Term Natural Motion Definition Straight up or down. Objects seek natural resting places. "natural" for heavy things to fall & light things to rise. Such as a boulder falling, or smoke rising Term Violent Motion Definition imposed motion. result of forces that pushed or pulled. had external cause. objects in natural resting place could not move by themselves.   So, proper state of objects was 1 of rest unless pushed/pulled, or moving toward natural resting place Term Copernicus Definition reasoned that earth and planets orbit sun -wrote De Revolutionibus Term Galileo Definition demolished idea that force needed to keep object moving Term Force Definition any push or pull Term Friction Definition force that acts to resist relative motion   -if absent, object would need no force to continue moving Term Inertia Definition the reluctance of any object to change its state of motion Term Newton's 1st Law [law of inertia] Definition Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it Term Kilograms Definition Mass is measured in Term Mass Definition the quantity of matter in an object. More specifically, mass is a measure of the inertia, or 'laziness,' that an object exhibits in response to any effort made to start it, stop it, or otherwise change ist state of motion Term Weight Definition the force of gravity on an object Term Newton Definition SI unit of force Term Net force Definition The combination of all forces acting on an object. it is this that changes on object's state of motion Term Support Force [normal force] Definition force that completely balances the weight of an object at rest Term Definition Term equilibrium Definition a state of balance. the state of a body on which no net force acts Term Definition