Potential and Kinetic Energy

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Potential and Kinetic Energy
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How is all energy divided?
All Energy
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What is Potential Energy?

• Energy that is stored and waiting to be used later

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What is Gravitational Potential Energy?

• Potential energy due to an objects position
• P.E. mass x
• height x gravity

Dont look down, Rover! Good boy!
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What is Elastic Potential Energy?

• Potential energy due compression or expansion of
  an elastic object.

Notice the ball compressing and expanding
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What is Chemical Potential Energy?

• Potential energy stored within the chemical bonds
  of an object

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What is Kinetic Energy?

• Energy an object has due to its motion
• K.E. 1/2mv2

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Kinetic Energy Depends on 2 factors

• Mass and Velocity

If Dino and the car have the same velocity, which
has the greater KE?
If the trucks have the same mass, which one has
greater KE?
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Which factor has the greater impact on KE?

• Think about the formula!!

Velocity has greater influence because it is
SQUARED in the formula!!
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Energy is Conserved!
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The total amt of energy remains constant!!
KE i PE i KE f PE f
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Mechanical Energy

• The total amount of KE and PE is referred to as
  the total MECHANICAL ENERGY of an object.
• TME KE PE

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There are other forms of energy.
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