Details Title: Chapter 9 Vocabulary Description: Mr. Micmillens 9th grade Physical Science Total Flash Cards: 14 Created: 10/22/2007 14:41:08		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 motion Definition an objects change in position  relative to a reference point Term displacement Definition the change of position in an object Term speed Definition the distance  traveled by an object divided by the time interval during which the motion occured Term velocity Definition the speed of an object in a particular direction Term acceleration Definition the rate at which velocity  changes over time; an object accelerates if its speed, direction, or both change Term force Definition an action exerted on a body in order to change the body's state of rest or motion; force has magnitude and direction Term friction Definition a force that opposes motion between the two surfaces that are in contact Term static friction Definition the force that resists  the initiation of sliding motion between two surfaces that are in contact and at rest Term kinetic friction Definition the force that opposes the movement of two  surfaces that are in contact and aresliding over each other Term inertia Definition the tendency of an object to resist being moved or if the object is moving, to resist a change in speed or direction Term free fall Definition the motion of a body when only the force of the gravity is acting on the body and velocity of an object Term terminal velocity Definition the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite... Term projectile motion Definition the curved path that an object follow when thrown, launched, or otherwise near the surface of the Earth Term momentum Definition a quantity as the product of the mass and velocity of an object is moving