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Unit 1
Unit 1

... – Object with a smaller mass (such as the Moon, or Mercury) have a low escape velocity. Gas particles near the planet can escape easily, so these bodies don’t have much of an atmosphere. – Planets with a high mass, such as Jupiter, ...
State the universal law of gravitation
State the universal law of gravitation

... 10. The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why? According to the universal law of gravitation, two objects attract each other w ...
Halliday-ch13
Halliday-ch13

PHYS 201 STUDY GUIDE FOR PART TWO:
PHYS 201 STUDY GUIDE FOR PART TWO:

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Force - Back

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Newton`s Second Law
Newton`s Second Law

Chapter 13 - Gravitation
Chapter 13 - Gravitation

... gravitational force on the explorers becomes alarmingly large and then, exactly at the center, it suddenly but only momentarily disappears. Then the capsule travels through the second half of the tunnel, to the north pole. Check this story by finding the gravitational force on the capsule of mass m ...
Sir Isaac Newton was born in the same year that Galileo died. His
Sir Isaac Newton was born in the same year that Galileo died. His

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G10-LC4-Q1-Answer Key

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Chapter 12 powerpoint

... electromagnetic force.  Electric and magnetic force are the only forces that both attract and ...
Forces - SCHOOLinSITES
Forces - SCHOOLinSITES

Newton`s Laws of Motion - Brookville Local Schools
Newton`s Laws of Motion - Brookville Local Schools

... • Newton didn’t know what caused gravity, although he knew that all objects with mass have gravity and respond to gravity. • To Newton, gravity was simply a property of objects with mass. • Newton also couldn’t explain how gravity was able to span between objects that weren’t touching. – He didn’t l ...
Exam 2 study guide
Exam 2 study guide

... direction between them and magnitude FG = Gm1m2/r2, with G= 6.67x10-11 N m2/kg2. Adding gravitational forces - they add as vectors, just like other forces. The force outside of a spherical body is the same as if all of the body’s mass were at the body’s center. Gravity near Earth’s surface - acceler ...
Forces Test Guide - Williamstown Independent Schools
Forces Test Guide - Williamstown Independent Schools

... 7) Why is less force needed to keep an object moving than to start it moving? Less force is needed because the inertia of the object wants to keep it moving. To start an object moving you have to overcome its wanting to stay still (its inertia) 8) Define inertia and state Newton’s 1st law. Inertia i ...
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Blank Jeopardy

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How many laws did Newton create?

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inertial reference frame - University of Toronto Physics

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... 2. A ball is shot at an angle of 450 to the horizontal. What happens to the magnitude of the ball’s vertical acceleration during the total time interval that the ball is in the air? a. it decreases, then increases b. it decreases, then remain the same a. it increases, then decreases d. It remains th ...
Pull my Strings: Normal Forces, Force Vectors, Pulleys and Strings
Pull my Strings: Normal Forces, Force Vectors, Pulleys and Strings

... • “Normal” refers to the direction of the force • The Normal Force is the contact force due to gravity, acting in the direction opposite to gravity. • When an object is moving with constant speed under the influence of gravity, the normal force equals the force of gravity—the “weight.” ...
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Newton`s laws, part 1(Sep 20)

... Forces are important since they are the starting point of Newtonian mechanics. The idea is to analyze each body in a problem in isolation to determine the forces that act on it. If we know the initial position and velocity of the body, we then solve Newton’s equations of motion, to find out where th ...
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Gravity

Gravity or gravitation is a natural phenomenon by which all things with mass are brought towards (or 'gravitate' towards) one another including stars, planets, galaxies and even light and sub-atomic particles. Gravity is responsible for the complexity in the universe, by creating spheres of hydrogen, igniting them under pressure to form stars and grouping them into galaxies. Without gravity, the universe would be an uncomplicated one, existing without thermal energy and composed only of equally spaced particles. On Earth, gravity gives weight to physical objects and causes the tides. Gravity has an infinite range, and it cannot be absorbed, transformed, or shielded against.Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915) which describes gravity, not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass/energy; and resulting in time dilation, where time lapses more slowly in strong gravitation. However, for most applications, gravity is well approximated by Newton's law of universal gravitation, which postulates that gravity is a force where two bodies of mass are directly drawn (or 'attracted') to each other according to a mathematical relationship, where the attractive force is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is considered to occur over an infinite range, such that all bodies (with mass) in the universe are drawn to each other no matter how far they are apart.Gravity is the weakest of the four fundamental interactions of nature. The gravitational attraction is approximately 10−38 times the strength of the strong force (i.e. gravity is 38 orders of magnitude weaker), 10−36 times the strength of the electromagnetic force, and 10−29 times the strength of the weak force. As a consequence, gravity has a negligible influence on the behavior of sub-atomic particles, and plays no role in determining the internal properties of everyday matter (but see quantum gravity). On the other hand, gravity is the dominant force at the macroscopic scale, that is the cause of the formation, shape, and trajectory (orbit) of astronomical bodies, including those of asteroids, comets, planets, stars, and galaxies. It is responsible for causing the Earth and the other planets to orbit the Sun; for causing the Moon to orbit the Earth; for the formation of tides; for natural convection, by which fluid flow occurs under the influence of a density gradient and gravity; for heating the interiors of forming stars and planets to very high temperatures; for solar system, galaxy, stellar formation and evolution; and for various other phenomena observed on Earth and throughout the universe.In pursuit of a theory of everything, the merging of general relativity and quantum mechanics (or quantum field theory) into a more general theory of quantum gravity has become an area of research.
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