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Chapter 9 Vocabulary

Work quantity of energy transferred by a force when it is applied to a body and causes that body to move in the direction of the force
Power a quantity that measures the rate at which work is done
mechanical advantage a quantity that measures how much a machine multiplies force or distance
simple machine one of the six basic types of machines of which all other machines are composed
compound machine a machine made of more than one simple machine
potential energy the stored energy resulting from the relative positions of objects in a system
kinetic energy the energy of a moving object due to its motion
mechanical energy the sum of the kinetic and potential energy of large-scale objects in a system
efficiency a quantity, usually expressed as a percentage, that measures the ratio of useful work output to work input
Created by: wtravis