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Explaining the Relationship Between Work and Energy
by Raliavan Enagea
http://www.energyrelief.com
The work-energy principle deals with equivalent amounts of
kinetic energy being equal to the work that~s being done.
Sounds rather complex, but when you break it down into
simple terms, it really just means that the body needs a
way to ensure that the energy levels are equal to the task
of the work at hand.
For instance, in the case of a straight collision, the work
portion of the equation can be compared to the impact
multiplied by the distance traveled at the time of the
impact. This is expressed in the equation which states,
~average impact force x distance traveled = change in
kinetic energy~. Examples of scenarios such as these are
often found in word problems, such as, ~If car A ~ weighing
3200 pounds ~ is traveling at 35 miles per hour and hits a
tree..., etc.~
The effects of kinetic energy is the reason that we need to
use seatbelts in order to protect ourselves from the harm
of being thrown through the windshield of a car or tossed
about within the interior of the car. The use of a
seatbelt enables us to improve our chances of not falling
victim to the force of kinetic energy. The next time
someone tells you that an equal number of people get
injured by using seatbelts as those who are injured by the
lack of them, explain kinetic energy and see if they want
to take their chances.
Since energy is defined as the capacity for doing work,
that definition can be applied to any number of scenarios.
As long as there is motion that~s brought about by the
human body or some vehicle which houses the body (such as a
car, truck, etc.) ~ as well as a variety of other
circumstances ~ energy is at work. Therefore, the
work-energy principle does not specifically apply to
natural human energy, but also to manufactured forms of
energy, such as a speeding car, applying the brakes to a
car and so forth. While kinetic energy doesn~t exclusively
apply to scenarios of devastation, it~s critical to
remember its impact and heed cautious guidelines when such
a powerful tool is involved.
The bottom line is, everything we do on a daily basis
involves some form of the work-energy principle. Since all
that we do requires some form of motion ~ even something
as rudimentary as breathing ~ energy is at work virtually
all of the time. Without such a principle at work, then,
you would be unable to function.
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