1. Potential and Kinetic Energy

2. What is energy? Energy is the ability to do work.
(UNIT for Energy is the Joule (J)
Work is applying a force and causing an object to move in the direction of the force.
W = F x d

3. How is energy classified?
All Energy
Potential
Energy
Kinetic
Energy
Gravitation
Potential
Energy
Elastic
Chemical

4. What is Kinetic Energy?
Kinetic Energy is energy an object has due to its motion.

5. Kinetic Energy Formula
½ (m x v2)
m = mass
v = velocity
Kinetic Energy is dependent upon the mass of an object and its velocity.
Unit for KE = Joule

6. Who has more kinetic energy?
A 71 kg man walking at 1.0 m/s.
A 71 kg man running at 5.0 m/s.

7. What is Potential Energy?
Potential Energy is energy that is stored and waiting to be used later.

8. What is Gravitational Potential Energy?
energy due to an object’s
position.
G. P.E. =
mass x height x gravity
(m) (h) (g)
g= 9.8 m/s2

9. Gravitational Potential Energy

10. What is Elastic Potential Energy?
Elastic Potential energy is due to the compression or expansion of an elastic object.

11. What is Chemical Potential Energy?
Potential energy stored within the chemical bonds of an object.

12. Chemical Potential Energy

13. Chemical Potential Energy

14. Law of Conservation of Energy
The law of conservation of energy states that energy may neither be created nor destroyed it can only be converted into a different form.
L GPE
L KE

15. Energy Conversions
H GPE
L GPE
H KE
L KE

16. Energy Conversions

17. Energy Conversions

18. Energy Conversions