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AP Physics 1 - Dynamics Flashcards

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9580873721ForceA push or a pull0
9580873722Net ForceThe resultant of all forces acting on an object. Causes the object to changes its state of motion.1
9580873723WeightThe force of gravity pulling on a given mass. Fw = m∙g2
9580873724Force of FrictionA resistive force that acts on an object opposite the direction of motion.3
9580873725Kinetic FrictionThe resistive force that opposes the motion of a moving object.4
9580873726Static FrictionThe resistive force that keeps an object at rest when a force is applied to it. ALWAYS equal to the applied force.5
9580873727Normal ForceThe supportive force from a surface of contact. It is ALWAYS EXACTLY perpendicular to the surface.6
9580873728Coefficient of FrictionA ratio that describes the relative stickiness between two surfaces in direct contact. Maximum static is ALWAYS larger than kinetic.7
9580873729Newton's First LawAn object will maintain constant linear velocity until acted on by an outside net force.8
9580873730Newton's Second LawA net force applied to an object will cause the object to accelerate. Acceleration is directly related to the magnitude of the net force. Acceleration is in the same direction as the net force. Acceleration is inversely related to the mass of the object.9
9580873731Newton's Third lawFor every force there is an equal and opposite force. The forces are exactly equal in magnitude and directly opposite in direction. The forces occur simultaneously on SEPARATE objects.10
9580873732Free-Body DiagramA sketch of the forces being applied to a given object. Used to analyze all situations.11
9580873733TensionPulling force that is exerted by a stretched, taut rope, cable, or string. Must be determined through use of a FBD.12
9580873734Inclined PlaneA slanted surface along which a force moves an object to a different elevation. Also called a ramp. Shift the X- and Y-planes to work with objects on inclined planes.13
9580873735ResultantThe sum (or combination) of all vectors. Determined using the Head-to-Tail Method.14
9580873736InertiaAn object's resistance to changes in its state of motion. Comes from the matter/mass the object is made of.15
9580873737MassMeasure of an object's inertia. Measured in kilograms (kg). Total amount of matter (atoms, particles, etc.) that are present.16
9580873738EquilibriumA state that occurs when the net force on an object or system is zero.17
9580873739Static EquilibriumA state that occurs when an object or system is at rest.18
9580873740Dynamic EquilibriumA state that occurs when an object is moving in a straight line with constant speed.19
9580873741PulleyA simple machine that consists of a grooved wheel with a rope or cable wrapped around it. Changes the direction of the applied force. Analyze systems of masses and pulleys as entire systems and/or as individual objects.20

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