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Unit 2 Lesson1-3

TermDefinition
Work Is the use of force to move an object some distance in the direction of the force.
Energy The ability to cause change
Power The rate at which work is done or energy is transformed.
Kinetic Energy The energy of an object that is due to the object motion.
Potential Energy The energy that an object has because of the position,condition,or chemical composition of the object
Mechanical Energy The sum of an object kinetic energy and potential energy due to gravity or elastic deformation
Machine A device that helps do work by changing the magnitude or direction of an applied force
Mechanical Advantage A number that tells how many times a machine multiplies input force.
Mechanical Efficienty A quantity that measures the ratio of work input in a machine
Lever A simple machine that consists of a bar that pivots at a fixed point called fulcrum
Fulcrum The point on which a lever pivots.
Wheel and Axle A simple machine consisting of two circular objects of different sizes
Pulley A simple machine that consists of a wheel over which a rope,chain,or wire passed
Inclined Plane A simple machine that is a straight,slanted surface which facilitates the raising of loads
Created by: 18renj0502
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