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Unit 2, lessons 123

Unit 2, Lessons 1, 2, 3

TermDefinition
work The use of force to move an object some distance in the direction of the force.
energy The ability to do work.
power The rate at which work is done.
kinetic energy The energy of motion.
potential energy The energy an object has because of its position.
mecanical energy The energy possessed by an object due to it's motion and position.
machine Any device that helps people do work in a different way.
mechanical advantage The number of times a machine multiplies the input force.
mechanical efficientcy A comparison of a machines work output with the work output.
lever A simple machine that has a bar that pivots at a fixed point.
fulcrum The fixed point of a lever.
wheel and axle A machine constructed of a wheel and a small cylinder.
pulley A machine that has a grooved wheel that holds a rope or a cable.
inclined plane A machine that is a straight, slanted surface.
Created by: 18lmoyers0323
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