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Work, Energy & Machines

Teacher: Lori Thompson
Across
The ratio of output work to input work
Type of kinetic energy that is in reference to the movement of a systems center of mass.
Ratio of resistance force to effort force
The ability to produce a change in itself or the world
Equal to the change in energy divided by the time required for the change
The type of energy associated with motion
Down
The force exerted by the user of a machine
A simple machine that helps you lift
The force exerted by the machine
A device that makes things easier by changing the magnitude or direction
Is equal to 1 joule of energy transformed in 1 second
When force is applied through a displacement ___ is done.
Work in measured in what unit?
____ machine consist of two or more simple machines
Is calculated by multiplying magnitude of force by the magnitude of displacement times the cosine of the angle between them
A simple machine that holds to things together