1. Energy Transformation-- when energy is changed from one form to another
An object’s energy can be:
As velocity kinetic energy and potential energy
As velocity kinetic energy and potential energy
1. All Kinetic Energy
2. All Potential Energy
3. A combination of both
increases
increases
decreases
decreases
decreases
increases
INVERSE
WHAT IS THE TYPE OF RELATIONSHIP KE AND PE HAVE?

2. Law of the Conservation of Energy…
is NEVER created or destroyed!
can only be STORED or TRANSFORMED.

3. Examine an example of potential energy
What if the flower pot is lowered from a sill at 20m from the ground to a sill 10m from the ground:
Does this change the potential energy of the flower pot?
When did it have more potential energy?
Yes
When it was higher off the ground.

4. Kinetic and potential energy
Are constantly being
exchanged

5. Pe to Ke

6. Roller Coasters
As you move up to the first hill on a roller coaster the distance
between the coaster and the Earth increases, resulting in an increase
of Gravitational Potential Energy.
At the top of the first hill you have the most Gravitational Potential
Energy
As you begin your trip down the hill you increase your speed
resulting in a transformation from GPE to KE.
At the bottom of the hill right before it goes back upward the
GPE is small, but the KE is Large.
As it starts to move up the next hill or loop KE is transformed
back into GPE

7. Pendulum swing