 | Everything in the universe changes through the movement and transformation of energy. Work is a form of energy. Kinetic energy is the energy of motion and potential energy is the stored energy of position. Power is the rate at which work is done or energy is transformed. Light, heat, and electricity are macroscopic forms of energy that we can experience directly.
Renewable energies are those forms of energy that nature replenishes at least as fast as we can use them, such as solar, hydroelectric, and wind power.
|  | | By the end of this chapter you should be able to
|  | describe different types of energy;
| | calculate work given force and distance for one-dimensional movements;
| | calculate potential and kinetic energy in joules;
| | solve one-step problems involving power, work, energy, and time;
| | describe electrical energy in terms of amperes and volts; and
| | understand the meaning of intensity in the context of light.
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|  | 9A: Work and the force versus distance graph
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