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GEORGIA S8P2 Students will be familiar with the forms and transformations of energy Explain the relationship between potential and kinetic energy.

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Presentation on theme: "GEORGIA S8P2 Students will be familiar with the forms and transformations of energy Explain the relationship between potential and kinetic energy."— Presentation transcript:

1 GEORGIA S8P2 Students will be familiar with the forms and transformations of energy Explain the relationship between potential and kinetic energy

2 States of Energy Potential Kinetic
The most common energy conversion is the conversion between potential and kinetic energy. All forms of energy can be in either of two states: Potential Kinetic

3 States of Energy Kinetic and Potential Energy
Kinetic Energy is the energy of motion. Potential Energy is stored energy.

4 Kinetic Energy The energy of motion is called kinetic energy.
The faster an object moves, the more kinetic energy it has. The greater the mass of a moving object, the more kinetic energy it has. Kinetic energy depends on both mass and velocity.

5 Kinetic Energy KE =1/2mv2 KE = ½ X mass X (velocity)2
What has a greater affect on kinetic energy; mass or velocity? Why?

6 Potential Energy Potential Energy is stored energy.
Stored chemically in fuel, the nucleus of atom, and in foods. Or stored because of the work done on it: Stretching a rubber band. Winding a watch. Pulling back on a bow’s arrow. Lifting a brick high in the air.

7 Potential Energy Energy that is stored due to being stretched or compressed is called elastic potential energy.

8 Potential Energy If you stand on a 3-meter diving board, you have 3 times the P.E. than you had on a 1-meter diving board.

9 Potential Energy “The bigger they are the harder they fall” is not just a saying. It’s true. Objects with more mass have greater P.E. The formula to find P.E. is Potential energy = mass x height PE = m x h .

10 Kinetic-Potential Energy Conversion
Roller coasters work because of the energy that is built into the system. Initially, the cars are pulled mechanically up the tallest hill, giving them a great deal of potential energy. From that point, the conversion between potential and kinetic energy powers the cars throughout the entire ride.

11 Kinetic vs. Potential Energy
At the point of maximum potential energy, the car has minimum kinetic energy.

12 Kinetic-Potential Energy Conversions
As a basketball player throws the ball into the air, various energy conversions take place.

13 Ball speeds up Ball slows down

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