elastic material, plastic material, rigid material, deformation temporary, deformation permanent, no deformation, Hooke's law, F=Kx, Elastic materials have_____________values of K, Rigid materials have_______________values of K, Low, High, Dynamometer, Instrument to measure forces, Point of application, The place where the force is applied, The numerical value, The amount of force being applied, The direction, The direction of the motion, The resultant force if they have the same direction and sense, F= F 1 + F 2, The resultant force if they have the same direction and oposite sense, F= F 1 - F 2, The resultant force if they have perpendicular directions (they form 90º), F2= F1 2 - F2 2, The SI unit of force is........., Newton (N),

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