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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Potential Kinetic

• energy of position or energy in storage.
• Water behind a dam
• Hammer over head
• Food on the plate

• energy of motion, the form capable of doing work
• Flowing water
• A falling hammer
• Electrons regenerating ATP in a biological cell

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What is Potential Energy?

• Energy that is stored and waiting to be used later

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Potential Energy

• The energy in matter due to its position or the
  arrangement of its parts

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What is Gravitational Potential Energy?

• Potential energy due to an objects position
• The higher an object the greater the
  gravitational potential energy
• 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. .5(mass x speed2)

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Kinetic Energy

• Energy of a moving object

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What is Mechanical Energy?

• Energy due to a objects motion (kinetic) or
  position (potential).
• The bowling ball has mechanical energy.
• When the ball strikes the pins, mechanical energy
  is transferred to the pins!

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Examples of Mechanical Energy
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Potential or Kinetic Energy Do You Know the
Difference?
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• Which energy type?
• An airplane circling in preparation for a landing

Potential Energy
Kinetic Energy
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Which energy type? A pile of coal that will be
used for fuel
Potential Energy
Kinetic Energy
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Which energy type? A flag blowing in the wind
Potential Energy
Kinetic Energy
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Which energy type? A hatbox stored on the top
shelf of a closet
Potential Energy
Kinetic Energy
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Which energy type? An unlit firecracker
Potential Energy
Kinetic Energy
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Which energy type? A hammer held above a nail
Potential Energy
Kinetic Energy
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Which energy type? A marble rolling down the
aisle of your science classroom
Potential Energy
Kinetic Energy
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Which energy type? A new car battery
Potential Energy
Kinetic Energy
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Which energy type? Glucose stored in plants as a
result of photosynthesis
Potential Energy
Kinetic Energy
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Which energy type? An ant crawling across a
sandwich at a picnic
Potential Energy
Kinetic Energy
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Which energy type? A tennis racket about to crash
down on a ball near the net
Potential Energy
Kinetic Energy
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Which energy type? An eyelash fluttering
Potential Energy
Kinetic Energy
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Which energy type? Energy at rest
Potential Energy
Kinetic Energy
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Which energy type? The release of stored energy
Potential Energy
Kinetic Energy
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Which energy type? Energy of motion
Potential Energy
Kinetic Energy
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Which energy type? A dam holding back a rivers
water
Potential Energy
Kinetic Energy
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Which energy type? A mousetrap set and ready to
spring
Potential Energy
Kinetic Energy
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Super Job! You are correct!
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