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Newton's Laws and Force Terms

Newton's Laws and Force Terms

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Tags: science   physics   high school   force   ngss   hs-ps2-1   ps2-1   newton   laws  

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Force (F)
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Any pull or push applied to an object. Has both a magnitude and a direction (and is thus a vector).
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Free-Body Diagram
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A diagram used to show all of the forces acting on an object.
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Net Force
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The resultant of all forces acting on an object.
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Newton's Second Law
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Newton (N)
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The standard unit of measurement for Force.
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Newton's First Law
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If an object is at rest or at constant velocity, it will remain that way until acted upon by a force.
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Inertia
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The resistance of any physical object to any change in its state of motion, including changes to its speed and direction.
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Equilibrium
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Apparent Weight
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The weight of an object due to all of the forces acting upon it.
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Weightlessness
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When the object's apparent weight is zero (usually when a = -g).
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Drag Force
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The force of a liquid which acts against a moving object.
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Terminal Velocity
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When the drag force is equal to gravitational force (and thus net acceleration equals zero and velocity is constant).
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Interaction Pair
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Two forces that act in equal magnitudes but in opposite directions.
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Newton's Third Law
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For every action, there is an equal and opposite reaction. The force done by object A on object B will be reciprocated equally back onto object A in the opposite direction.
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Tension
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The pulling force exerted by each end of a string, cable, or chain.
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Normal Force
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The force from a surface which acts on an object perpendicularly to the plane of the surface.
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Weight
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The force on an object due to gravity.
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