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Mechanical energy**

Mouse trap
There are two main types of mechanical energy. They are motion energy and stored mechanical energy.

Motion energy: This is the energy something has because it is moving (eg a speeding cricket ball). You can feel the effect of this energy if the cricket ball hits you. Motion energy is also called kinetic energy.

Stored mechanical energy: This is energy something has stored in it because of its height above the ground or because it is stretched or bent or squeezed (eg in a stretched rubber band). You can feel it when the band is released.

Stored mechanical energy is also called potential energy.

  1. Name three examples of objects that have motion energy.
  2. Name some examples of objects that have stored mechanical energy.
  3. Which of these types of mechanical energies are possessed by a bowling ball, an apple on a tree and an aeroplane flying?

Mechanical energy can be changed into other forms of energy. Name the device that changes motion energy into electrical energy.



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