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Force Term Definitions A. Force – A push or pull on an object that changes it’s velocity, direction or shape.F=M●A B. Gravity – A force that attracts any two objects to each other. G=L(2Π●F)2 C. Friction – The resistance produced when the surface of one object rubs against the opposing surface of another object. D. Velocity – Rate of speed and direction of an object. V= D/T E. Acceleration – Rate of change of velocity. A=F/M F. Elasticity – ability of an object to return to its original form after the removal of deforming forces. K= ∆F/∆L G. Inertia – Tendency of all objects to stay at rest if they are at rest, and keep moving if they are in motion. H. Energy – The ability to do work. I. Cen trip etal Force– Force directed in to the center of a circle. Keeps objects from “flying away” from the circle. J. Cen tri fu gal – A force that pulls outward and away from the center of the circle. K. Momentum – Product of an object’s mass and velocity. Mo=M●V L. Resistance – The weight on an object to be moved. M. Potential Energy – Stored energy of an object due to its position. PE=M●G●H N. Work – Product of force and distance applied to an object. W=F●D O. Kinetic Energy – The energy of a moving object. KE=½M●V2 P. Mass - Amount of matter in an object. Q. Effort – The force exerted. R. Equilibrium – All forces are in balance and all forces equals zero. ΣF=0 S. Torque – The turning effect of a force. T. Weight – Measure of the pull of gravity on an object. WT=F●D