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Transcript
Potential
and Kinetic
Energy
How is all energy divided?
All Energy
Potential
Energy
Gravitation
Potential
Energy
Elastic
Potential
Energy
Kinetic
Energy
Chemical
Potential
Energy
What is Potential Energy?
o Energy that is stored
and waiting to be
used later
What is Gravitational Potential
Energy?
o Potential energy
due to an object’s
position
Don’t look down,
Rover!
Good boy!
o P.E. = mass x
height x gravity
What is Elastic Potential Energy?
o Potential energy due compression or
expansion of an elastic object.
Notice the ball compressing
and expanding
What is Chemical Potential Energy?
o Potential energy
stored within the
chemical bonds of
an object
What is Kinetic Energy?
o Energy an object has due
to its motion
o K.E. = .5(mass x speed2)
THE TRADE OFF Between Potential
& Kinetic Energy
Law of Conservation of Energy- Energy
can neither be created nor destroyed.
Energy is always changing from one
kind to another. The total energy of an
object never changes.
Conservation of energy states that Ki + Pi = Kf + Pf
.
This simply means that the sum of the skiers
initial potential and kinetic energy is equal to the
sum of the skiers final potential and kinetic
energy.