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Topic: Acceleration due to gravity

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	Acceleration due to gravity - Wikipedia, the free encyclopedia
		The total acceleration of a body is found by vector addition of the opposite of the actual acceleration (in the sense of rate of change of velocity) and a vector of 1 g downward for the ordinary gravity (or in space, the gravity there).
		The units of acceleration due to gravity, meters per second squared, are interchangeable with newtons per kilogram.
		Gravity decreases with height, at a rate which near the surface of the Earth is such that linear extrapolation would give zero gravity at a height of one half the radius of the Earth, i.e.
	en.wikipedia.org /wiki/Acceleration_due_to_gravity (1553 words)

	Acceleration Due to Gravity on the Moon
		Acceleration due to gravity is the acceleration of a freely falling body.
		The acceleration due to gravity, g is directed towards the center of whatever object gravity is draw towards, for example Earth, or any other planet.
		This is approximately 1/6 that of the acceleration due to gravity on Earth, 9.81 m/s
	hypertextbook.com /facts/2004/MichaelRobbins.shtml (221 words)

	Newton's law of universal gravitation - Wikipedia, the free encyclopedia
		Gravity in a room: the curvature of the Earth is negligible at this scale, and the force lines can be approximated as being parallel and pointing straight down to the center of the Earth
		Although Newton's description of gravity is sufficiently accurate for many practical purposes and is therefore widely used, it is limited to domains where gravitational potential is a small fraction of speed of light squared.
		It is enough that gravity does really exist and acts according to the laws I have explained, and that it abundantly serves to account for all the motions of celestial bodies.
	en.wikipedia.org /wiki/Law_of_universal_gravitation (1434 words)

	acceleration due to gravity (g)
		The acceleration that an object experiences because of gravity when it falls freely close to the surface of a massive body, such as a planet.
		The downward force of gravity is opposed by an outward centrifugal force due to the planet's rotation, which is greater at the equator than at a higher latitudes.
		On other planets and moons the values of the acceleration due to gravity may be very different, resulting in different weights for the same object on these various worlds.
	www.daviddarling.info /encyclopedia/A/accgrav.html (429 words)

	The Physics Classroom
		It is known as the acceleration of gravity – the acceleration for any object moving under the sole influence of gravity.
		As a matter of fact, this quantity known as the acceleration of gravity is such an important quantity that physicists have a special symbol to denote it – the symbol g.
		Another way to represent this acceleration of 10 m/s/s is to add numbers to the ticker tape diagram from the first section of this lesson.
	www.physicsclassroom.com /Class/1DKin/U1L5b.html (438 words)

	Gravity and Spin
		The acceleration due to gravity on the is as you not 9.8 m/s2, this is from the mass of the earth and the rotation.
		Gravity due to the earth's mass is G(Gravitational Constant) x Mass of Earth/(radius of earth)squared.
		Gravity is a universal property of all objects and is not considered in ordinary Newtonian mechanics to have anything to do with the state of motion.
	www.newton.dep.anl.gov /askasci/phy99/phy99x82.htm (2547 words)

	Physics of Skydiving - Acceleration (Site not responding. Last check: 2007-10-31)
		Gravity acts on all bodies in the universe, and each bodies' gravitional effects are related.
		The gravitational acceleration produced from earth is approximately 9.8 m/s^2, which changes slightly as you move closer to or away from the earth's center of mass.
		Newton's Second Law states, "The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass" (Serway et al).
	ffden-2.phys.uaf.edu /211_fall2002.web.dir/DaneLenakerSkydiving/acceleration.htm (535 words)

	[No title]
		The acceleration of a free-falling object is called the acceleration due to gravity, denoted by g.
		The acceleration due to gravity on the surface of the Moon for a 250-pound astronaut is the same as the acceleration due to gravity on the surface of the Moon for a 175-pound astronaut.
		The acceleration on the surface of the Moon due to gravity is approximately one-sixth of the gravitational pull on the Earth.
	www.unf.edu /~tbratina/hec/example/outofthisworld/fallingobject.htm (530 words)

	Hubble Space Telescope - Wikipedia, the free encyclopedia
		In addition, the solar arrays and their drive electronics were replaced, as well as four of the gyroscopes used in the telescope pointing system, two electrical control units and other electrical components, and two magnetometers.
		Astronomers using the telescope to observe distant supernovae uncovered evidence that far from decelerating under the influence of gravity, the universe may in fact be accelerating.
		Due to the precession of the orbit, the location of the CVZ moves slowly over a period of eight weeks.
	en.wikipedia.org /wiki/Hubble_Space_Telescope (7511 words)

	Acceleration of Gravity
		The purpose of this lab is to measure the constant acceleration g due to gravity near the earth's surface by two different methods.
		are the two masses, a is the acceleration of the masses and g is the acceleration due to gravity.
		The acceleration of gravity is measured by allowing a steel ball to fall, after starting at rest, and then applying the equation for accelerated motion.
	teacher.nsrl.rochester.edu /phy_labs/Measure_g/Measure_g.html (1129 words)

	About Gravity
		Gravity is, besides the weak nuclear force, the strong nuclear force and the electrostatic force, one of the four basic forces described in nature today.
		The level of acceleration of the rocket, a, is the same as the Earth gravity, g.
		It is calculated that the force of gravity is 400,000 times smaller then the force of surface tension, and the force for moving only one single electron in a typical electrical field of a nerve cell membrane is comparable to the weight of an entire cell.
	www.desc.med.vu.nl /Gravity_us.htm (1487 words)

	Acceleration Due to Gravity on Mars
		Once air resistance is ignored, the acceleration due to gravity is constant which means the same.
		Acceleration due to Gravity is represented by the symbol g.
		In finding the acceleration due to gravity on Mars by using the equation that is used to find Earth's acceleration due to gravity.
	hypertextbook.com /facts/2004/JahshirahRossi.shtml (383 words)

	AcademicDB - Acceleration due to gravity.
		This acceleration due to gravity is independent of the object's mass.
		When this happens there will be no more acceleration and the object will continue to fall at a constant velocity, know as terminal velocity.
		Acceleration due to gravity is not the same through out the...
	www.academicdb.com /acceleration_due_gravity_9474 (236 words)

	Aerospaceweb.org \| Ask Us - Gravity, Acceleration & Speed
		The acceleration due to gravity is a constant value, meaning that we can apply a series of relationships called the uniform acceleration formulas.
		Note that the signs of the accelerations and velocities have been converted to negative numbers to indicate that the penny is moving downward from its initial height.
		The acceleration has essentially been reduced to zero by about 4 seconds, when the drag has increased to the point that it is equal and opposite to the weight.
	www.aerospaceweb.org /question/dynamics/q0203.shtml (1999 words)

	Gee - Facts, Information, and Encyclopedia Reference article
		g (also gee, g-force or g-load) is a non-SI unit of acceleration defined as exactly 9.806 65 m/s², which is approximately equal to the acceleration due to gravity on the Earth's surface.
		The total acceleration is found by vector addition of the opposite of the actual acceleration (in the sense of rate of change of velocity) and a vector of 1 g downward for the ordinary gravity (or in space, the gravity there).
		The actual acceleration of a body at the Earth's surface depends on the location at which it is measured, smaller at lower latitudes, for two reasons.
	www.startsurfing.com /encyclopedia/g/e/e/Gee.html (1203 words)

	Kayak Wiki: Acceleration Due To Gravity (Site not responding. Last check: 2007-10-31)
		The acceration due to gravity is roughly constant.
		The acceleration of gravity is important in wave dynamics, classical mechanics, and insane kayaking (i.e.
		If the bridge were high enough, she would reach a point where the force due to wind resistance would balance the force due to gravity.
	www.kayakforum.com /cgi-sys/cgiwrap/guille/wiki.pl?action=browse&id=Acceleration_Due_To_Gravity&oldid=Acceleration_Of_Gravity (172 words)

	Acceleration (Site not responding. Last check: 2007-10-31)
		constant, unchanging acceleration; when an object is uniformly accelerated, the speed of the entire time interval that the acceleration occurred over can be represented by the average velocity of that time interval.
		The acceleration due to gravity is a constant rate of acceleration.
		The magnitude of the acceleration due to gravity is dependent upon the distance of the object from the center of the earth.
	www.ship.edu /~sagoul/acceleration.htm (644 words)

	Gravity
		Newton postulated that this force between two objects was due to the masses of the objects and that it was proportional to the product of the masses of the two objects.
		If we postulate that the inertial mass and the gravitational mass are the same, then the acceleration due to gravity may be calculated by equating the weight of an object to the force exerted on the object by the earth's gravitational field:
		From this it is clear that the acceleration due to the earth's ravitational field is independent of the mass of the object.
	www.physchem.co.za /Motion/Gravity.htm (760 words)

	Lab 3 - Gravity
		To determine the acceleration of gravity acting on a freely falling object.
		The acceleration due to gravity is symbolized by the letter g (Note: the letter g does NOT stand for grams!) and is measured in units of m/s
		The way you'll calculate this acceleration due to gravity is to first determine the velocity at two different points.
	www.sethi.org /classes/misc/physics_labs/lab_03.html (496 words)

	The Physics Classroom
		All free-falling objects (on Earth) accelerate downwards at a rate of approximately 10 m/s/s (to be exact, 9.8 m/s/s).
		Because free-falling objects are accelerating downwards at a rate of 10 m/s/s (9.8 m/s/s – to be more accurate), a ticker tape trace of its motion depicts an acceleration.
		This free-fall acceleration can also be demonstrated using a strobe light and a stream of dripping water.
	www.physicsclassroom.com /Class/1DKin/U1L5a.html (292 words)

	Acceleration (Site not responding. Last check: 2007-10-31)
		Finally, along the 180-degree curve, the car is changing its direction; once more the car is said to have an acceleration due to the change in the direction.
		Accelerating objects have a changing velocity - either due to a speed change (speeding up or slowing down) or a direction change.
		A simple rule of thumb for determing the direction of the acceleration is that an object which is slowing down will have an acceleration directed in the direction opposite of its motion.
	www.glenbrook.k12.il.us /gbssci/phys/mmedia/kinema/avd.html (424 words)

	Determination of the Acceleration Due to Gravity (Site not responding. Last check: 2007-10-31)
		The acceleration due to gravity, g, was determined by dropping a metal bearing and measuring the free-fall time with a pendulum of known period. The measured value is 9.706 m/s
		The acceleration due to gravity is the acceleration experienced by an object in free-fall at the surface of the Earth, assuming air friction can be neglected. It has the approximate value of 9.80 m/s
		The acceleration due to gravity was measured to be 9.706 m/s
	atlantic.edu /program/academic/stratton/labreport_files/labreport.htm (756 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		Theory The acceleration of gravity near the surface of the earth provides the classic example of uniformly accelerated motion.
		The velocity experienced should be given by v = v0 + a t Near the surface of the earth the acceleration, a, should be equal to g (the acceleration due to gravity).
		Since the falling fence should be experiencing an acceleration, you should notice that the earlier velocities should be smaller and the later velocities should be larger.
	www.phys-astro.sonoma.edu /people/faculty/chavez/p116/P116AccelerationGravity.doc (1769 words)

	Acceleration Due To Gravity (Site not responding. Last check: 2007-10-31)
		Acceleration (the rate of change of velocity) is caused by a net force on an object.
		However, if you drop a book and a piece of paper, you will notice that the paper does not accelerate as much as the book because the small force of gravity on the paper is easily opposed by the force of air friction on the paper.
		A similar force acts on the book from the air but it is small compared to the force of gravity on it.
	www.regentsprep.org /Regents/physics/phys01/accgravi/index.htm (248 words)

	Aerospaceweb.org \| Ask Us - Gravity on Other Planets
		Acceleration due to gravity (g) is also an important variable used to calculate properties like speed near the surface a planet or other large body.
		The last column of the table compares the acceleration due to gravity of the body to that of Earth.
		As we have seen, the mass of an object remains constant whether it is on the surface of Earth, the surface of the Moon, or in the depths of space.
	www.aerospaceweb.org /question/astronomy/q0227.shtml (607 words)

	Acceleration Due to Gravity Lab
		Goal: To use the definition of acceleration in a direct measurement of the acceleration due to gravity
		Introduction: A direct measurement of the acceleration due to gravity requires the measurement of the velocity of a falling object at two instants of time as well as the measurement of the time interval between these two instants.
		In this experiment, the task of measuring these 3 intervals is left to a computer, triggered by the passage of the object through a photogate.
	www.phy.duke.edu /~kolena/physics/labs/gravity.html (864 words)

	The Acceleration of Gravity
		It was learned in the previous part of this lesson that a free-falling object is an object which is falling under the sole influence of gravity; such an object has an acceleration of 9.8 m/s/s, downward (on Earth).
		This numerical value for the acceleration of a free-falling object is such an important value that it is given a special name.
		Recall from an earlier lesson that acceleration is the rate at which an object changes its velocity; it is the ratio of velocity change to time between any two points in an object's path.
	www.glenbrook.k12.il.us /gbssci/phys/Class/1DKin/U1L5b.html (502 words)

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