PPT Slide
- An object has potential energy by virtue of its position and kinetic energy due to its motion.
- The potential energy of a weight raised above the ground is con- verted to kinetic energy as it falls.
- When the weight hits the ground, it transfers some kinetic energy to the soil, causing some particles to move, doing work. Also, some of the transferred kinetic energy appears as heat.
- Potential energy in chemical bonds of foods and fuels is converted into kinetic energy giving the ability to do work and generate heat.
- Whenever energy is transferred from one object to another, it appears as work, w, and/or as heat, q.