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work, energy and power (Selina ) (energy (examples of energy (kinetic (a…

- - - - w=work done
      - f=force
      - d=distance
  - - - p=power
      - t=time
- - - - a person running
    - - earth's gravity
    - - batteries
    - - rubber bands
    - - bombs?
    - - geothermal
    - - sunlight
    - - sounds
    - - very common all around our life
- - - - advantages: they generate a lot of energy.
      - disadvantages: there are no enough amount of them.
    - - advantages: it is renewable and it can be relied on forever as long as there are water and it will not pollute the environment.
      - disadvantages: the equipments might cost a lot and need to be checked and fixed.
    - - advantages: it can be used again and again.
      - disadvantages: they don't generate enough energy.
    - - advantages: generate a lot of energy.
      - disadvantages: create pollutions, the amount of them are fewer and fewer.
    - - advantages: no pollution, won't run out.
      - disadvantages: no energy will be generated during stormy days.
    - - advantages: it will not pollute the environment and it don't cost much.
      - disadvantages: it is not reliable because winds are not blowing all the time.