DagwoodGum
Squirreling Dervish
Newton doesn't have a law of energy.
http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/physicallaws.htm
Jump, I guess my junior high school science classes failed me. I should have just waited until I could ask you...
Energy
Newton's Laws give us precise definitions of energy, defined as the ability to do work, which in turn is defined as a force acting over a distance. Power is energy per second, so it reflects the ability to do continuous work. For example, a falling object can definitely exert a force over a distance, and the associated energy before it starts to fall is called potential energy:
potentialenergy.jpg (32207 bytes)
where M is the mass of the earth, m the mass of the object, and r is the distance from the center of the earth. The potential energy is defined in a way that makes it nearly zero far from the earth, and increasingly negative as the object falls farther toward the center of the earth. Once it is falling, it also has kinetic energy
kineticenergy.jpg (25677 bytes)
where v is his velocity.
The law of conservation of energy
Energy may be transformed from one form to another (as in from the battery packs to the pc), but it can not be created or destroyed
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