# Kinetic and Potential Energy - Elizabeth School District C-1 ```ENERGY AND WORK
Say whaaaat?
WHAT IS ENERGY?
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energy - the ability to do work or cause change
WHAT IS WORK?
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work - force exerted on an object that causes it
to move (transfer of energy)
TWO MAIN TYPES OF
ENERGY
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Kinetic Energy - energy of motion
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Potential Energy - stored energy
KINETIC ENERGY
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depends on mass and velocity
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Formula:
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KE = (mv2) / 2
Units:
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Joules (J)
POTENTIAL ENERGY
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stored energy
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Formula (PE gravitational):
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PE = mgh
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Units = Joules (J)
WHAT IS A JOULE?
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Named after James Prescott Joule
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studied work (physics) in the 1800’s
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One Joule is the amount of work you do when
you exert a force of one newton to move an
object one meter.
VOCABULARY
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energy - the ability to do work or cause change
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work - force exerted on an object that causes it to
move
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kinetic energy - energy that an object has due to its
motion
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potential energy - energy that is stored
VOCABULARY
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elastic energy - potential energy stored in
stretched or compressed objects
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gravitational energy - potential energy that
depends on the height of an object
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mechanical energy - kinetic or potential energy
associated with the motion or position of an object
VOCABULARY
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thermal energy - the total energy of the particles
in an object, heat energy
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chemical energy - the potential energy stored in
chemical bonds
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electrical energy - the energy of moving electric
charges
VOCABULARY
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electromagnetic energy - the energy of light and