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Machine- A device that makes work easier by changing the speed , direction, or amount of a force.
Simple Machine- A device that performs work with only one movement. Simple machines include lever, wheel and axle, inclined plane, screw, and wedge.
Ideal Mechanical Advantage (IMA)- A machine in which work in equals work out; such a machine would be frictionless and a100% efficient
Actual Mechanical Advantage (AMA)- It is pretty much the opposite of IMA meaning it is not 100% efficient and it has friction.
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