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Power Unit-Science
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Gravity
a force acting through a distance
Terms in this set (17)
Work
a force acting through a distance
Work Formula
W = F x d
Energy
ability to do work
Power
the rate at which work is done or the amount of work per unit of time
Power formula
P = W/t or P = F x d/t
Joule (j)
unit of work/energy
Watt
unit of power; joules/sec
Weight (w)
measure of the force of gravity on an object
Newton
unit of force/weight
Force (F)
a push or a pull that causes a change in motion
Potential energy
stored energy
Potential energy formula
PE=mgh
Kinetic energy
energy in motion
Kinetic energy formula
KE=1/2mv2
Law of Conservation of Energy
Energy is neither created nor destroyed. It is only transformed from one form to another.
Simple Machine
an instrument that makes work easier
Mechanical advantage
the number of times a machine multiplies the effort force
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