Motion (physics) - Factbites

Motion (physics) - Factbites
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Topic: Motion (physics)

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	The Physics Classroom
		Unit 1 of the Physics Classroom discussed a variety of ways by which motion can be described – words, graphs, diagrams, numbers, etc. This unit, Newton's Laws of Motion, will discuss the ways in which motion can be explained.
		An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
		The behavior of the water during the relay race can be explained by Newton's first law of motion.
	www.physicsclassroom.com /Class/newtlaws/U2L1a.html (980 words)

	REPRESENTATIONAL MOMENTUM OR REPRESENTATIONAL IMPETUS
		The hypothesis of the proposed research is that our mental representations regarding objects’ motion are composed of (a) implicit knowledge about objects motion that does not accurately reflect physical principles, but is consistent with impetus ideas, and (b) explicit conscious knowledge about motion that primarily depends on the person’s physics background.
		The hypothesis of the proposed research is that our mental representations regarding objects’ motion are composed of (a) implicit perceptually-based knowledge about objects motion that is not consistent with physics principles, but rather reflects impetus ideas, and (b) explicit conceptual knowledge about motion that primarily depends on the person’s physics background.
		Table 1 shows predictions of Newtonian physics and impetus theory predictions for the case of ascending and descending motions.
	www.arch.usyd.edu.au /kcdc/books/VR99/Kozhev.html (1741 words)

	Motion
		In physics, motion means a change in the position of a body with respect to time, as measured by a particular observer in a particular frame of reference.
		Until the end of the 19th century, Newton's laws of motion, which he posited as axioms or postulates in his famous Principia, were the basis of what has since become known as classical physics.
		Calculations of trajectories and forces of bodies in motion based on Newtonian or classical physics were very successful until physicists began to be able to measure and observe very fast physical phenomena.
	www.brainyencyclopedia.com /encyclopedia/m/mo/motion.html (1741 words)

	Stealing from the Masters
		The motion in cartoons is highly expressive—especially those created by master animators—because they use traditional animation principles and cartoon physics.
		Cartoon capture tracks the motion of a traditionally animated cartoon and retargets it into other characters and other media.
		Cartoon capture transforms a digitized cartoon into a motion capture representation.
	graphics.stanford.edu /projects/tooncap (168 words)

	Newton's First Law
		An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
		There are many applications of Newton's first law of motion.
		These three laws have become known as Newton's three laws of motion.
	www.glenbrook.k12.il.us /gbssci/phys/Class/newtlaws/u2l1a.html (999 words)

	The Gaza Withdrawal and Newton’s Law of Physics - Worldpress.org
		Newton’s First Law of Motion states that every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
		Under Newton’s Second Law of Motion, an object with a certain velocity maintains that velocity unless a force acts on it to cause an acceleration.
		Newton’s Third Law of Motion states that for every action there is an equal and opposite reaction.
	www.worldpress.org /Mideast/2105.cfm (1234 words)

	National Interest, The: Quantum leap - parallelism between quantum mechanics and politics
		At the subatomic level, the laws of Newtonian physics are broken, or, it may be more accurate to say, transcended.
		Newtonian physics is human-scale physics, ideally suited to the manipulation of objects in our immediate physical world.
		If Newtonian physics grows inaccurate as we move to the large scale, then it also becomes irrelevant as we move to the tiniest scale, as quantum mechanics has demonstrated.
	www.findarticles.com /p/articles/mi_m2751/is_n39/ai_16989248 (1234 words)

	Max Planck Institute for the History of Science
		In physics, Brownian motion research played a significant part in the overhaul of physics in the early decades of the twentieth century, and the emergence of a ‘modern’ physics opposed to the ‘classical’ physics of previous decades.
		The significance of Brownian motion for the resolution of the century-old debate among chemists about atomic reality was portentous, albeit perhaps on a more symbolic than pragmatic level; as few chemists had in previous years actually attempted to settle the question experimentally.
		Brownian motion, the perpetual and irregular motion of particles suspended in a solution, had long been known but until then little noticed.
	www.mpiwg-berlin.mpg.de /projects/NWGII_BiggBMcorr (785 words)

	The Physics of Aristotle vs. the Physics of Galileo
		He also taught that dynamics (the branch of physics that deals with motion) was primarily determined by the nature of the substance that was moving.
		Thus, Aristotle believed that the laws governing the motion of the heavens were a different set of laws than those that governed motion on the earth.
		The Physics of Aristotle vs. the Physics of Galileo
	csep10.phys.utk.edu /astr161/lect/history/aristotle_dynamics.html (785 words)

	The Internet Classics Archive Physics by Aristotle
		Further, it is a law of nature that earth and all other bodies should remain in their proper places and be moved from them only by violence: from the fact then that some of them are in their proper places it follows that in respect of place also all things cannot be in motion.
		Either all things are at rest, or all things are in motion, or some things are at rest and others in motion.
		It is clear, therefore, that there are cases of occasional motion and occasional rest.
	classics.mit.edu /Aristotle/physics.8.viii.html (7806 words)

	Physics Concepts: Inertia, Moment Of
		Moment of inertia describes energy associated with rotational motion.
		It describes an object’s resistance to be put it in motion, or if it is in motion, to change its speed or direction of motion due to the application of torque (turning force).
		Physics Concepts: Inertia, Moment Of COOL and NEW
	www.ceeo.tufts.edu /robolabatceeo/k12/classroom/inertia_moment_of.asp (87 words)

	Sponsors
		This discovery did not receive much attention in the physics community, until before the turn of the 20th century when Guoy linked Brownian motion with the molecular hypothesis by arguing that this erratic motion is the result of the collision of the particle with surrounding thermally agitated molecules.
		Historians refer to the year of 1905 as Einstein’s annus mirabilis – “the miracle year” when he completed and published his major studies on the special theory of relativity, the quantum theory, and the theory of Brownian motion.
		This idea received a brilliant confirmation in 1905 when Einstein related the mathematical law governing Brownian motion to the principles of the kinetic-molecular theory of heat.
	www.pg.infn.it /erice2002/Objective.html (87 words)

	Newton's First Law
		An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
		If in motion with an eastward velocity of 5 m/s, they will continue in this same state of motion (5 m/s, East).
		Coffee tends to "keep on doing what it is doing." When you accelerate a car from rest, the road provides an unbalanced force on the spinning wheels to push the car forward; yet the coffee (which was at rest) wants to stay at rest.
	www.glenbrook.k12.il.us /gbssci/phys/Class/newtlaws/u2l1a.html (999 words)

	Orbits in 2D
		In intro physics the topic was the motion of planets under the influence of the Sun's gravitational force...orbital mechanics.
		In quantum mechanics the topic is the motion of an electron under the influence of the electrostatic attractive force of the nucleus...atomic physics.
		Orbital Motion: motion of a particle with a
	www.physics.csbsju.edu /orbit/orbit.2d.html (1468 words)

	Perpetual motion - Wikipedia, the free encyclopedia
		Perpetual motion machines (the Latin term perpetuum mobile is not uncommon) are a class of hypothetical machines which would produce useful energy in a way which would violate the established laws of physics.
		Scientists and engineers accept the possibility that the current understanding of the laws of physics may be incomplete or incorrect; a perpetual motion device may not be impossible, but overwhelming evidence would be required to justify rewriting the laws of physics.
		Machines which claim not to violate either of the two laws of thermodynamics but rather claim to generate energy from unconventional sources are sometimes referred to as perpetual motion machines, although they do not meet the standard criteria for the name.
	en.wikipedia.org /wiki/Perpetual_motion (1507 words)

	NON-CONTRADICTION.COM - Aristotle and Aristotelianism
		Now the principles which cause motion in a physical way are two, of which one is not physical, as it has no principle of motion in itself.
		Hence, too, what effects motion as a physical agent can be moved: when a thing of this kind causes motion, it is itself also moved.
		If, on the other hand, we investigate the question more in accordance with principles appropriate to physics, we are led as follows to the same result.
	www.non-contradiction.com /ac_works_b7.asp (1507 words)

	The Coffee Place's Joke Stack
		This is the one law of animated cartoon motion that also applies to the physical world at large.
		Cartoon Law II Any body in motion will tend to remain in motion until solid matter intervenes suddenly.
		Whether shot from a cannon or in hot pursuit on foot, cartoon characters are so absolute in their momentum that only a telephone pole or an outsize boulder retards their forward motion absolutely.
	www.thecoffeeplace.com /jokes/aaaaaawz.html (1507 words)

	Step Four
		Basically, Newtonian physics presents the universe as something that can be easily broken down, catalogued, understood, and predicted; Quantum Mechanics recognizes that the universe is infinitely more complex than we could ever comprehend, and instead tries to find the probabilities of things that will happen.
		Their desperate clinging to their delusion of a universe where everything in favor of their ideal universe, one where everything can be easily broken down, catalogued, understood, and predicted, is holding the possibility of new scientific discoveries in the realm of physics hostage back in the 1940's, with Einstein.
		Thus, "quantum mechanics" is the study of the motion of quantities.
	www.greatestjournal.com /users/jax_me_off/44414.html (1507 words)

	Constraint-based Approach
		Moreover, it is possible for the motion to be over-constrained, in which case the optimization algorithm is given the responsibility of arbitrating between the user defined constraints and the constraints induced by the laws of physics [Funge1995].
		Using inverse dynamics, the resulting motions are physically ``correct'' (in the sense that the animated body responds to forces in a realistic manner), but they may still look unnatural with respect to any specific form of animal locomotion.
		Unfortunately, this means that the compromise solutions produced may not lead to visually realistic motion, especially if the laws of physics are compromised.
	www.dgp.toronto.edu /~tu/thesis/node31.html (1507 words)

	David Brogan -- CS 551/851 Computer Animation and Virtual Environments
		Artificial Fishes: Physics, Locomotion, Perception, Behavior, Xiaoyuan Tu and Demetri Terzopoulos.
		Motion Capture -- Use an SGI Inventor motion capture playback program to convert a motion sequence of a walking human into a smoothly repeating motion cycle
		Physically Based Modeling: Differential Equation Basics SIGGRAPH '97 Course Notes (Physically Based Modeling).
	www.cs.virginia.edu /~dbrogan/CS551.851.animation.sp.2000 (1507 words)

	Force
		One of the foundation concepts of physics, a force may be thought of as any influence which tends to change the motion of an object.
		In mechanics, forces are seen as the causes of linear motion, whereas the causes of rotational motion are called torques.
		Our present understanding is that there are four fundamental forces in the universe, the gravity force, the nuclear weak force, the electromagnetic force, and the nuclear strong force in ascending order of strength.
	hyperphysics.phy-astr.gsu.edu /hbase/force.html (1507 words)

	Speed and Velocity
		The motion of a moving object can be explained using either Newton's Laws (Unit 2 of The Physics Classroom) and vector principles (Unit 3 of The Physics Classroom) or by means of the Work-Energy Theorem (Unit 5 of The Physics Classroom).
		To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed.
		is the motion of an object in a circle with a constant or uniform speed.
	www.glenbrook.k12.il.us /gbssci/phys/Class/circles/u6l1a.html (1272 words)

	Force in physics - definition and explanation
		Forces can cause motion, but they are not always correlated with motion.
		force is “something” which can change the state of motion.
		There are hundreds of object around us on which forces are acting, but which are not moving.
	www.staff.amu.edu.pl /~romangoc/M3-1-force-physics.html (1272 words)

	The Internet Classics Archive Physics by Aristotle
		It is true that at any moment it is always over against something stationary: but it is not at rest: for at a moment it is not possible for anything to be either in motion or at rest.
		Again, since motion is always in a period of time and never in a moment, and all time is divisible, for everything that is in motion there must be a time less than that in which it traverses a distance as great as itself.
		Thus we have the result that the thing that has changed, at the moment when it has changed, is changing to that to which it has changed, which is impossible: that which has changed, therefore, must be in that to which it has changed.
	classics.mit.edu /Aristotle/physics.6.vi.html (7134 words)

	Buddhist Channel Healing & Spirituality A Relationship Between Moving Reality and Static Constructions of Logic?
		With process physics we have almost achieved this end, and Wheeler has already expressed this notion of inveterate habits as "law without law" [27].
		With process physics western science and philosophy is now able to move beyond the moribund non-process mindset.
		But before this can be accepted it must show itself capable of explaining the tridimensionalty of space, the laws of motion, and the general characteristics of the universe, with mathematical clearness and precision; for no less should be demanded of every philosophy.
	www.buddhistchannel.tv /index.php?id=7,185,0,0,1,0 (780 words)

	ipedia.com: Motion Article
		In physics, motion means a change in the position of a body with respect to time, as measured by a particular observer in a particular frame of reference.
		In physics, motion means a change in the position of a body with respect to time, as measured by a particular observe...
		Until the end of the 19th century, Newton's laws of motion, which he posited as axioms or postulates in his famous Principia, were the basis of what has since become known as classical physics.
	www.ipedia.com /motion.html (398 words)

	CIPA Mission - zero point field, zero point energy, ZPF, ZPE
		That study found the more general result that the relativistic equation of motion could be derived from consideration of the Poynting vector of the zero-point field in accelerated reference frames, again within the context (and limitations) of SED (Physics Letters A, 240, 115, 1998; Foundations of Physics, 28, 1057, 1998).
		This SED analysis suggested that Newton's equation of motion (F=ma), heretofore regarded as a postulate of physics, might be derivable from Maxwell's equations as applied to the electromagnetic zero-point field.
		The de Broglie wavelength of an electron placed in motion appears to be related to Doppler shifts of Compton-frequency oscillations associated with Zitterbewegung.
	www.calphysics.org /mission.html (398 words)

	Sir Isaac Newton: biography, biografia, picture, gravity, laws of motion, calculus, principia, metaphysics, quotes-12
		He made major contributions in mathematics and theoretical and experimental physics and achieved a remarkable synthesis of the work of his predecessors on the laws of motion, especially the law of universal gravitation.
		Book 2 deals with motion in resistant mediums, that is, in physical reality.
		Book 1 treats the motion of bodies in purely mathematical terms.
	www.isaac-newton.info /isaac-newton (398 words)

	Physics 128 Lecture: Translation and Rotation
		For a translating and rotating rigid body the total kinetic energy is the sum of the transitional kinetic energy of the center of mass motion and the rotational kinetic energy about the center of mass.
		In order for the two motions to coincide correctly producing the rolling motion, the angular velocity of the wheel about the center of mass must equal the velocity of the center of mass times the radius of the wheel.
		If it is possible to identify a fixed axis of rotation it is almost always easier to describe the motion as a pure rotation.
	www.cord.edu /dept/physics/p128/lecture_24.html (832 words)

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Topic: Motion (physics)

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