Energy

1.4.3 Scalars and vectors

1.5.2 Energy resources

Energy

  1. A body can have energy due to its motion or its position
  2. Energy can be transferred and stored
  3. Energy exists in different forms: kinetic, gravitational potential, chemical, strain, nuclear, internal, electrical, light and sound
  4. Kinetic energy is equal to 12mv2 and gravitational energy is equal to mgh
  5. The law of conservation of energy states that the total energy of an isolated system cannot change