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Unit 2 Energy


Work The transfer of energy to an object by using a force that causes the object
Power The rate at which work is done
Energy the ability to work
Kinetic energy Energy of motion
Potential energy The energy that an object has because of the position, condition, or chemical composition of the object
Mechanical energy Does not include chemical energy or nuclear energy
Machine A device that helps do work by changing the magnitude and/or direction of an applied force
Mechanical advantage A number that tells how many times a machine multiplies input force
Mechanical efficiency Percentage that measures the ratio of work output in a machine
Lever A simple machine that consists of a bar that pivots at a fixed point called a fulcrum
Wheel and axle A simple machine consisting of two circular objects of different sizes
Inclined plane
Created by: Flipsfordays