UNIT 6 VOCABULARY ( FORCE AND MOTION) 1) Acceleration 2) Air Resistance 3) Average Speed 4) Balanced Forces 5) Direction 6) Energy 7) Force 8) Conservation of Energy 9) Inclined Plane 10) Kinetic Energy 11) Load 12) Motion 13) Net Force 14) Newton 15) Position 16) Pulley 17) Potential Energy 18) Simple Machine 19) Unbalanced Forces 20) Work Change of an object's speed or direction An opposing or slowing force caused by air Average distance covered by an object per unit time (total distance ÷ total time = average speed) Forces of an object that do not change the motion of the object The path that an object is moving or facing What is needed to do work or cause change A push or pull that causes an object to move, stop, or change direction—changes the motion or position of an object. Energy cannot be created no destroyed; it changes from one form to another A simple machine that is sloping at a particular angle Energy in motion Amount of work done or expected to be done A change in an object's position, direction, or location The sum of all the forces acting on an object The SI unit for force Where an object is located in space or area occupied by a physical object. A device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects Energy that is stored in a system Devices that reduce the amount of force needed to move an object Forces on an object that cause change in the motion of the object The use of force to move an object though a distance W=Fd.