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The Nature of Energy Motion, Force & Energy Chapter 5.1 Pages 140-145
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Page 1: Motion, Force & Energy Chapter 5.1 Pages 140-145.

The Nature of EnergyMotion, Force & Energy

Chapter 5.1Pages 140-145

Page 2: 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

Page 3: Motion, Force & Energy Chapter 5.1 Pages 140-145.

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.

Page 4: Motion, Force & Energy Chapter 5.1 Pages 140-145.

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.

Page 5: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Mechanical Energy• Energy associated with

motion (KE & PE)

Page 6: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Thermal Energy• Energy of particles in an object

Page 7: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Chemical Energy• Energy stored in chemical bonds

Page 8: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Electrical Energy•Moving electric charges

Page 9: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Electromagnetic Energy•Waves of energy, such as light

Page 10: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Nuclear Energy•The fusion or fission of atoms

Page 11: Motion, Force & Energy Chapter 5.1 Pages 140-145.

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

Page 12: Motion, Force & Energy Chapter 5.1 Pages 140-145.

A bow string that is pulled back and ready to fire is…

•Gravitational PE

A

•Elastic PE

B

•Rubber KE

C

•Elastic KE

D

Page 13: Motion, Force & Energy Chapter 5.1 Pages 140-145.

Exit PassWhat is the difference between Kinetic and Potential energy?

Give an example of each.