Physics notes on energy

ENERG
• The gravitational potential energy of an object is the energ
the gravitational field relative to some reference point.
• The kinetic energy of an object is the energy the object has
• The mechanical energy of an object is the sum of the poten
object.
• The unit for energy is the joule (JJ).
• The Law of Conservation of Energy states that energy cann
changed from one form into another.
• The Law of Conservation of Mechanical Energy states that
system (i.e. no friction or air resistance) remains constant.
•


1. POTENTIAL ENERGY

The potential energy of an object is generally defined as the
position relative to other objects that it interacts with.
GRAVITATIONAL POTENTIAL ENERGY IS is the energy an obje
gravitational field relative to some reference point.
Quantity: Gravitational potential energy (EPEP) Unit name

IMPORTANT!!
In the case of Earth, gravitational potential energy is the ene
above the surface of the Earth. The symbol EPEP is used to re
energy. Y