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Unit 2, Less 1,2,3


work the use of force to move an object some distance in the direction of force
energy ability to do work
power rate at which work is done
kinetic energy energy of motion
potential energy energy an object has because of its position, condition, or chemical composition
mechanical energy energy possessed by an object due to its motion and position
machine any device that helps people do work by changing the way work is done
mechanical advantage number of times a machine multiplies the input force
mechanical efficiency a comparison of a machine's work output with its work input
lever a simple machine that has a bar that pivots at a fixed point
fulcrum a fixed point
wheel and axle a simple machine that is made of a wheel connected to a small cylindrical object, the axle
pulley simple machine that has a grooved wheel that holds a rope or a cable
inclined plane a simple machine that is a straight, slanted surface
Created by: 18hallg0612