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" Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state. "
Elements of Natural Philosophy - Page 65
by William Thomson Baron Kelvin, Peter Guthrie Tait - 1873 - 279 pages
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First Principles

Herbert Spencer - Philosophy, Modern - 1864 - 602 pages
...from a brief consideration of his simple statement of the laws of motion. The first of these laws is : Every body continues in its state of rest or of uniform...motion in a straight line, except in so far as it is compelled by impressed forces to change that state," Thus Professor Tait quotes, and fully approves,...
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Mechanics for Beginners: With Numerous Examples

Isaac Todhunter - Mechanics - 1867 - 350 pages
...discuss the First Law of Motion. 10. First Law of Motion. Every body continues in a state of rest or of uniform motion in a straight line, except in so far as it may be compelled to change that state by force acting on it. It is necessary to limit the meaning of the word motion...
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Mechanics for Beginners: With Numerous Examples

Isaac Todhunter - Mechanics - 1867 - 350 pages
...difficulty. 133. We will here repeat the Laws of Motion. I. Every body continues in a state of rest or of uniform motion in a straight line, except in so far as it may be compelled to change that state by force acting on it. II. Change of motion is proportional to the acting force,...
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Chambers's information for the people, ed. by W. and R. Chambers, Volume 1

Chambers W. and R., ltd - 1874
...We shall give them as laid down by Newton, and then follow them up with observations on each. ist. Every body continues in its state of rest, or of uniform...straight line, except in so far as it may be compelled to change that state by forces impressed upon it. id. Change of motion is proportional to the impressed...
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First Lessons in Theoretical Mechanics

John Francis Twisden - Mechanics - 1874 - 253 pages
...parallelogram of forces. — Newton states and illustrates the laws of motion as follows : — ' 1. Every body continues in its state of rest or of uniform motion in a straight line, except so far as it is compelled by impressed Jorces to change its state. Projectiles continue in their state...
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A Treatise on Elementary Dynamics

William Garnett - 1875
...trace them into some of their consequences. LAW I. Every body will continue in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by impressed force to change that state. time is required, to produce a finite velocity...
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Lectures on Some Recent Advances in Physical Science with a Special Lecture ...

Peter Guthrie Tait - Force and energy - 1876 - 363 pages
...brief consideration of his simple statement of the Laws of Motion. The first of these Laws is : — Every body continues in its state of rest or of uniform...motion in a straight line, except in so far as it is compelled by forces to change that state. In other words, any change whether in the direction or...
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Matter and Motion

James Clerk Maxwell - Force and energy - 1876 - 128 pages
...the following form :— Law I. The centre of mass of the system perseveres in its state of rest, or of uniform motion in a straight line, except in so far as it is made to change that state by forces acting on the system from without. Law II. The change of momentum...
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Science in Sport Made Philosophy in Earnest ; Being an Attempt to Illustrate ...

Robert Routledge - 1877 - 332 pages
...great truth of the persistence of motion. He said, ' Every body perseveres in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled to change that state by impressed forces.' " " Then it follows," remarked Louisa, " that all the bodies...
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Natural Philosophy for Beginners: With Numerous Examples, Part 1

Isaac Todhunter - Philosophy - 1877 - 440 pages
...in the mode of stating them. 115. First Law of Motion. Every body continues in a state of rest, or of uniform motion in a straight line, except in so far as it may be compelled to change that state by force acting on it. The law may be said to assert that every body is of itself...
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