Unit 2b: Gravitational Force
... As the distance between two objects increases, the force of gravity decreases proportionally by the square of the distance: o If the distance is doubled, the force is ¼ as strong o If the distance is tripled, the force is 1/9 as strong o If the distance is quadrupled, the force is 1/16 as strong ...
... As the distance between two objects increases, the force of gravity decreases proportionally by the square of the distance: o If the distance is doubled, the force is ¼ as strong o If the distance is tripled, the force is 1/9 as strong o If the distance is quadrupled, the force is 1/16 as strong ...
2010_02_04 LP08 Our Galactic Home
... Up to 100 pc (parsecs) = 326 ly (light years) Up to 1000 pc (nearby in our galaxy) Up to 10,000 pc (104 pc) (into our galaxy) Up to 105 pc (100,000 pc) (through our galaxy) Up to 107 pc (far out into our galaxy and into other galaxies) ...
... Up to 100 pc (parsecs) = 326 ly (light years) Up to 1000 pc (nearby in our galaxy) Up to 10,000 pc (104 pc) (into our galaxy) Up to 105 pc (100,000 pc) (through our galaxy) Up to 107 pc (far out into our galaxy and into other galaxies) ...
Name____________________________________________
... 3. What is a galaxy? A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity. 4. What does an elliptical galaxy look like? Round or flattened ball; smashed circle 5. The Milky Way Galaxy is just one of billions of galaxies in the universe. 6. Our Solar Syst ...
... 3. What is a galaxy? A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity. 4. What does an elliptical galaxy look like? Round or flattened ball; smashed circle 5. The Milky Way Galaxy is just one of billions of galaxies in the universe. 6. Our Solar Syst ...
laws of motion
... For object sliding on a smooth inclined plane • The acceleration depends on the inclination of the plane only. It does not depend on the mass. Objects of different masses slide on the inclined plane with the same acceleration. • The acceleration always points down-slope, independent of the directio ...
... For object sliding on a smooth inclined plane • The acceleration depends on the inclination of the plane only. It does not depend on the mass. Objects of different masses slide on the inclined plane with the same acceleration. • The acceleration always points down-slope, independent of the directio ...
Newtons Second Law
... Newton’s Second Law of Motion The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. ...
... Newton’s Second Law of Motion The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. ...
Newton`s First Law of Motion
... forces acting on a body to its motion. The first is the law of inertia, it states that ‘every object in motion will stay in motion until acted upon by an outside force’. • The second is commonly stated as ‘force equals mass times acceleration’, or F = ma. • The third and final law is commonly known ...
... forces acting on a body to its motion. The first is the law of inertia, it states that ‘every object in motion will stay in motion until acted upon by an outside force’. • The second is commonly stated as ‘force equals mass times acceleration’, or F = ma. • The third and final law is commonly known ...
Lecture - Force and Acceleration File
... Mass Resists Acceleration Acceleration depends on the mass being pushed Greater the mass, the less the acceleration. Greater the acceleration, smaller the mass. ...
... Mass Resists Acceleration Acceleration depends on the mass being pushed Greater the mass, the less the acceleration. Greater the acceleration, smaller the mass. ...
Unit 3 Notes
... Examples of Newton’s 3 Law Newton’s third law: "For every action, there is an equal and opposite reaction." When you fire a gun you feel the recoil. Some of the funniest things in cartoons follow physics that have been exaggerated or just plain ignored. Wyle Coyote hangs suspended in space over that ...
... Examples of Newton’s 3 Law Newton’s third law: "For every action, there is an equal and opposite reaction." When you fire a gun you feel the recoil. Some of the funniest things in cartoons follow physics that have been exaggerated or just plain ignored. Wyle Coyote hangs suspended in space over that ...
Keplers-Laws
... • The orbits of the planets are elliptical (not circular) with the Sun at one focus of the ellipse. • There is one point called aphelion, where the object is farthest from the sun. • The other point is called perihelion, where the object is closest to sun ...
... • The orbits of the planets are elliptical (not circular) with the Sun at one focus of the ellipse. • There is one point called aphelion, where the object is farthest from the sun. • The other point is called perihelion, where the object is closest to sun ...
what is physics
... Kinematics uses distance, velocity, and acceleration to describe motion. Dynamics analyzes motion in terms of forces. The laws of motion were formulated by Isaac Newton three centuries ago. NEWTON’S FIRST LAW Newton’s first law is the Law of Inertia: “an object at rest will remain at rest and an obj ...
... Kinematics uses distance, velocity, and acceleration to describe motion. Dynamics analyzes motion in terms of forces. The laws of motion were formulated by Isaac Newton three centuries ago. NEWTON’S FIRST LAW Newton’s first law is the Law of Inertia: “an object at rest will remain at rest and an obj ...
Rotational Motion and Equilibrium
... a)If the mass of one is doubled and the distance between them is reduced to ½d, how does the force change? b) If both masses are doubled and the distance is also doubled how does the force change? ...
... a)If the mass of one is doubled and the distance between them is reduced to ½d, how does the force change? b) If both masses are doubled and the distance is also doubled how does the force change? ...
Ch. 12 Test Review Write the complete definition for the following
... 3. Which law states that an unbalanced force acting on objects equals the objects’ mass x acceleration? 4. Which law states that for every action force there is an equal and opposite reaction force? 5. The downward force exerted on an object due to gravity is _____________________? 6. ______________ ...
... 3. Which law states that an unbalanced force acting on objects equals the objects’ mass x acceleration? 4. Which law states that for every action force there is an equal and opposite reaction force? 5. The downward force exerted on an object due to gravity is _____________________? 6. ______________ ...
Newton`s Law of Motion.
... object are balanced, then the acceleration of that object will be 0 m/s/s. • Objects at equilibrium (the condition in which all forces balance) will not accelerate. • According to Newton, an object will only accelerate if there is a net or unbalanced force acting upon it. The presence of an unbalanc ...
... object are balanced, then the acceleration of that object will be 0 m/s/s. • Objects at equilibrium (the condition in which all forces balance) will not accelerate. • According to Newton, an object will only accelerate if there is a net or unbalanced force acting upon it. The presence of an unbalanc ...
Dark Matter Burners
... Could any of the “paradoxically young” stars near Sgr A* be white dwarfs burning dark matter? Answer: yes How can we demonstrate that any of these stars are white dwarfs burning dark matter? Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population ...
... Could any of the “paradoxically young” stars near Sgr A* be white dwarfs burning dark matter? Answer: yes How can we demonstrate that any of these stars are white dwarfs burning dark matter? Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population ...
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.