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13- Work and Simple Machines
Holt Rinehart & Winston
6
Physics
8th Grade
05/23/2011
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Cards

Term
work formula
 Definition
force x distance
fd
Term
power
 Definition
quanity that measures the rate at which work is done or energy is transferred
= work/time
Term
unit for power
 Definition
watts
Term
machanical advantage
 Definition
ratio beetween the output force and the input force or how much machine multiplies force or distance
Term
purpose of simple machines
 Definition
to make work easier
Term
wedge
 Definition
turns a downward force into two forces directed out to the sides
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