sci 5&6 (rev)

• moving object possessed momentum, and in relation to that, moving objects also have 


  energy
• all objects regardless of their state of motion (at rest or moving) possess a certain amount of

  energy
• energy can be transformed from one form to another. in such transformations, energy is said to be

  conserved
• is the energy acquired by objects upon which work is done

  mechanical energy
• mechanical energy can be either kinetic energy known as energy of motion or potential energy known as


  stored energy of position
• everything exists or cease to exist because of its

  presence or absence
• 2 kinds of mechanical energy

  potential enegy

  kinetic energy
• is energy possessed by objects at rest

  potential energy
• 2 kinds of potential energy

  gravitational potential energy (GPE)

  elastic potential energy
• is the energy by an object because of its location or position

  gravitational potential energy
• is the energy stored in a strecthed or compressed elastic material such as spring

  elastic potential energy
• is the energy possessed by an object by virtue of its motion

  kinetic energy
• is the sum of potential energy and kinetic energy

  total mechanical energy