Energy
quantity that causes matter to change and mediates how much change occurs; the ability to do work
gravitational potential energy
form of potential energy due to gravity. Close to the Earth's surface, gravitational potential energy is equal to mgh, measured in Joules (J).
Joule
unit of work and energy in the SI. A force of one Newton, acting for one meter requires 1 joule of work.
kinetic energy
energy due to mass in motion, measured in Joules (J)
law of conservation of energy
total energy in a closed system does not change over time. While energy cannot be created or destroyed, it can be transformed from one form to another, just as long as the total energy remains constant
mechanical energy
energy that comes from position or motion; sum of all potential energies and kinetic energies of an object; measured in Joules (J)
potential energy
energy due to an object's position, measured in Joules (J)
power
rate at which work is done or energy is transferred/converted, measured in Watts (W) which is one joule per second (1 J/s)
Watt
SI unit of power. One Watt corresponds to one joule per second (1 J/s)
work
force acting parallel or anti-parallel to displacement; can create a change in mechanical energy; force X displacement; measured in Joules (J)
work-energy theorem
change in the kinetic energy of an object equals the net work done on it.
Gravitational Potential Energy
mgh
Kinetic Energy
1/2 mv^2
Work
Fd
Power
W/t or Fv
Work
change in kinetic energy