Work, energy, and energy resources

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Introduction to work, energy, and energy resources

Work: the scientific definition

1 What it means to do work

2 Calculating work

3 Section summary

4 Conceptual questions

5 Problems & Exercises

Kinetic energy and the work-energy theorem

1 Work transfers energy

2 Net work and the work-energy theorem

3 Determining the work to accelerate a package

4 Section summary

5 Conceptual questions

6 Problems & Exercises

Gravitational potential energy

1 Work done against gravity

2 Converting between potential energy and kinetic energy

3 Using potential energy to simplify calculations

4 Finding the speed of a roller coaster from its height

5 Section summary

6 Conceptual questions

7 Problems & Exercises

Conservative forces and potential energy

Nonconservative forces

Conservation of energy

1 What is power?

2 Calculating power from energy

3 Examples of power

4 Power and energy consumption

5 Section summary

6 Conceptual questions

7 Problems & Exercises

Work, energy, and power in humans

World energy use

Source: OpenStax, College physics. OpenStax CNX. Jul 27, 2015 Download for free at http://legacy.cnx.org/content/col11406/1.9

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