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Details Title: Vocab 6(physics) Description: vocabulary Total Flash Cards: 24 Created: 11/18/2004 11:51:58	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term mechanical resonance Definition the amplitude of motion is increased by the repeated application of a force when the time between the applications is equal to the period of oscillation Term net force Definition The vector sum of two or more forces acting on an object is Term equilibrium Definition when then net force on an object is zero Term static friction force Definition the horizontal force exerted on one surface by another when the two surfaces are not in relative motion Term Newton's second law Definition the acceleration of a body is directly proportional to the net force on it and inversely proportional to its mass Term apparent weight Definition the force exerted by a scale on an object Term contact force Definition a force that acts on an object by touching it Term Newton's third law Definition the two forces in an interactive pair act on different objects and are equal in magnitude and opposite in direction Term environment Definition the world outside a system Term force of gravity Definition an attractive force that exists between all objects Term Newton's first law Definition An object that is at rest will remail at rest or an object that is moving will continue to move in a straight line with constant speed, if and only if the net force acting on the object is zero Term kinetic friction force Definition the horizontal force exerted on one surface by another when surfaces are in relative motion Term system Definition a defined object or group of objects Term inertia Definition the tendency of an object to resist changes in its motion Term agent Definition the specific identifiable cause of a force Term period Definition the time to repeat one complete cycle Term long-range force Definition a force that is exerted without contact Term amplitude Definition in any periodic motion, the maximum displacement from equilibrium Term force Definition a push or pull Term interaction pair Definition two forces that are in opposite directions and have equal magnitudes Term free-body diagram Definition a dot represents an object and arrows represent each force acting on it with their tail on the dot and their points indicating the direction of the force Term simple harmonic motion Definition the force that restores an object to its equilibrium position is directly proportional to its displacement Term terminal velocity Definition the constant velocity that a falling object reaches when the drag force equals the force of gravity Term weightlessness Definition when an object's apparent weight is zero