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Physics 310 - Assignment #1 - Due September 12
Physics 310 - Assignment #1 - Due September 12

... a fluid that produces both linear and quadratic fiscous drag, that is, find x(t) when the only forces acting on the object are Fdrag = −c1 v − c2 v|v|. Consider separately the two cases when the initial velocity is v0 > 0 and v0 < 0. 3. A box of mass M sits on an frictionless incline plane attached ...
APS Science Curriculum Unit Planner
APS Science Curriculum Unit Planner

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Center of Gravity - s3.amazonaws.com
Center of Gravity - s3.amazonaws.com

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... unbalanced force. The same is true for a body at rest. The second law predicts that when an unbalanced force is applied to a body it will produce acceleration; while the mass of the body (inertia) resists acceleration. The third law explains the result of the interaction of more than one force. Ever ...
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Chapter 5 Lecture Notes Formulas: a = aC + aT F = Gm1m2/r2

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... ht that th t a force f was required i d iin order d tto kkeep an object moving at constant velocity. An object was thought to be in it’s “natural state” when at rest. For example, if we slide an object on a floor with an initial speed v0 very soon the object will come to rest—Because of Friction. Ne ...
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The Science of Life in the Universe (Chap 2
The Science of Life in the Universe (Chap 2

The Science of Life in the Universe (Chap 2
The Science of Life in the Universe (Chap 2

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Gravitation MC

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F ma = Or , 0 , 0 Integrating twice gives the solution for position at

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General Physics STUDY GUIDE

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Force and Motion

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Modified Newtonian dynamics



In physics, modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies. Created in 1983 by Israeli physicist Mordehai Milgrom, the theory's original motivation was to explain the fact that the velocities of stars in galaxies were observed to be larger than expected based on Newtonian mechanics. Milgrom noted that this discrepancy could be resolved if the gravitational force experienced by a star in the outer regions of a galaxy was proportional to the square of its centripetal acceleration (as opposed to the centripetal acceleration itself, as in Newton's Second Law), or alternatively if gravitational force came to vary inversely with radius (as opposed to the inverse square of the radius, as in Newton's Law of Gravity). In MOND, violation of Newton's Laws occurs at extremely small accelerations, characteristic of galaxies yet far below anything typically encountered in the Solar System or on Earth.MOND is an example of a class of theories known as modified gravity, and is an alternative to the hypothesis that the dynamics of galaxies are determined by massive, invisible dark matter halos. Since Milgrom's original proposal, MOND has successfully predicted a variety of galactic phenomena that are difficult to understand from a dark matter perspective. However, MOND and its generalisations do not adequately account for observed properties of galaxy clusters, and no satisfactory cosmological model has been constructed from the theory.
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