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The Nature of Energy. Motion, Force & Energy Chapter 5.1 Pages 140-145. What is Energy?. Energy is the ability to do Work or cause a change Measured in Joules, like Work. Kinetic Energy. Kinetic Energy is the energy of motion All moving objects have Kinetic Energy ( KE ) - PowerPoint PPT Presentation
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The Nature of EnergyMotion, Force & Energy
Chapter 5.1Pages 140-145
What is Energy?
• Energy is the ability to do Work or cause a change–Measured in Joules, like Work
Kinetic Energy
• Kinetic Energy is the energy of motion
• All moving objects have Kinetic Energy (KE )
• What determines an object’s KE?– Mass & Velocity
determine the KE of an object.
Potential Energy
• Potential Energy (PE ) is stored energy– It has the potential or
“possibility” to do work
• Gravitational PE is energy that depends on height
• Elastic PE is for objects that can be stretched.
Mechanical Energy• Energy associated with
motion (KE & PE)
Thermal Energy• Energy of particles in an object
Chemical Energy• Energy stored in chemical bonds
Electrical Energy•Moving electric charges
Electromagnetic Energy•Waves of energy, such as light
Nuclear Energy•The fusion or fission of atoms
Which of the following is an example of Kinetic Energy?
•Compacted spring
A
•Boulder atop a mountain
B
•Boulder rolling down a mtn.
C
•Bike at the top of half pipe
D
A bow string that is pulled back and ready to fire is…
•Gravitational PE
A
•Elastic PE
B
•Rubber KE
C
•Elastic KE
D
Exit PassWhat is the difference between Kinetic and Potential energy?
Give an example of each.