New York Times on the Web Forums Science
Russian military leaders have expressed concern about US plans
for a national missile defense system. Will defense technology be
limited by possibilities for a strategic imbalance? Is this just SDI
all over again?
(1552 previous messages)
lunarchick
- 06:35pm Mar 26, 2001 EST (#1553
of 1567) lunarchick@www.com
A force is a push or a pull upon an object which results from
its interaction with another object. Forces result from
interactions! As discussed in Lesson 2, some forces result from
contact interactions (normal, frictional, tensional, and applied
forces are examples of contact forces) and other forces are the
result of action-at-a-distance interactions (gravitational,
electrical, and magnetic forces). According to Newton, whenever
objects A and B interact with each other, they exert forces upon
each other. When you sit in your chair, your body exerts a downward
force on the chair and the chair exerts an upward force on your
body. There are two forces resulting from this interaction - a force
on the chair and a force on your body. These two forces are called
action and reaction forces and are the subject of Newton's third law
of motion. Formally stated, Newton's third law is:
"For
every action, there is an equal and opposite reaction."
The statement means that in every interaction, there is a pair of
forces acting on the two interacting objects. The size of the forces
on the first object equals the size of the force on the second
object. The direction of the force on the first object is opposite
to the direction of the force on the second object. Forces always
come in pairs - equal and opposite action-reaction force pairs.
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This law might link in with communications. Middle East: I noted
a poem in a link above relating to the death of the boy en route to
look at a car with his father.
The cordon placed on Hebron - restricting the movement of 140,000
Palestinians in deference to 5,000 Isrealis who live in that town -
has indirectly lead to the sniping and killing of an Isreali child.
Exclusion/Death isn't an answer to moving forward to peace and
prosperity.
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Improved communications regarding HYPERSONICS air travel may
occur by reducing 'drag' .. taking a long haul flight currently 13
hours down to 4 hours.
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Distanced far or near,with or without all the world's wonderful
science and invention, the human communication systems have to be
improved, to enable people even not physically distanced to 'send
and receive' clearly, to enjoy growth with peace and prosperity.
lunarchick
- 08:35pm Mar 26, 2001 EST (#1554
of 1567) lunarchick@www.com
American business often has a philanthropic arm: see
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New York Times on the Web Forums Science
Missile Defense
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