2. 2 Everything Science www.everythingscience.co.za Potential
energy Potential energy is the energy an object has due to its
position or state. The gravitational potential energy of an object
is the energy the object has because of its position in the
gravitational field relative to some reference point. EP=mgh 3. 3
Everything Science www.everythingscience.co.za Kinetic energy The
kinetic energy of an object is the energy the object has due to its
motion. EK = 1 2 mv2 4. 4 Everything Science
www.everythingscience.co.za Mechanical energy The mechanical energy
of an object is the sum of the potential energy and kinetic energy
of the object. EM=EK +EP EM=mgh+ 1 2 mv2 5. 5 Everything Science
www.everythingscience.co.za Conservation of energy The Law of
Conservation of Energy states that energy cannot be created or
destroyed, but can only be changed from one form into another. The
Law of Conservation of Mechanical Energy states that the total
mechanical energy of an isolated system (i.e. no friction or air
resistance) remains constant. 6. 6 Everything Science
www.everythingscience.co.za For more practice or to ask an expert
for help on this section see: www.everythingscience.co.za
Shortcode: ESAHJ 7. 6 Everything Science
www.everythingscience.co.za For more practice or to ask an expert
for help on this section see: www.everythingscience.co.za
Shortcode: ESAHJ
