ENERGY
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Energy is the capacity to do work
The unit of energy is J(joule).1J(joule)=1N(newton)*1m(metre)
Another unit of energy is calorie(cal),where 1cal=4.18J
When work done is on body,its energy increases.When work done by body,its energy increases.
Different forms of energy are:-
  1. Mechanical Energy
  2. Heat Energy
  3. Light Energy
  4. Chemical Energy
  5. Sound Energy
  6. Magnetic Energy
  7. Electrical Energy
  8. Atomic or Nuclear Energy
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