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Position The location of an object is its < > Momentum The more < > an object has, the easier it is for that object to move other objects Force Units of < > are the newton and the pound Energy The ability to perform work is < > Velocity The measurement that combines the speed and direction of a moving object is < > Work The < > done on an object changes the amount of energy it has Fulcrum A < > is a pivot point for a lever Friction The force that opposes the motion of one object moving past another is < > Efficiency Electric motors have a high degree of < > because they output 85 percent of the energy they use Law of Conservation of Energy The idea that energy cannot be created or destroyed is the basis for the < > Acceleration The change in velocity over time is < > Balanced Force When two forces act on an object in opposite directions, it is call a(n) < > Potential Energy Energy that is stored is called < > Simple Machine A < > takes one force and changes it to a different force Load The force applied to a machine is called a(n) < >