CCEA Unit 1: Physics 1 Work Done & Power
Law of Conservation of Energy
Energy can neither be created nor destroyed simply changed from one form into another
Energy can be changed from one form into another but the total amount of energy remains the same.
e.g When an object is being thrown up or falling down there is an interchange between KE and PE.
Potential Energy (gravitational potential energy)
Energy held by a body by virtue of its position.
For an object of mass m raised a height h above the ground
POTENTIAL ENERGY = mgh
P.E. = mgh