Њутнови закони — разлика између измена

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* <cite id=cro2000>-{Crowell, Benjamin, (2011), [http://www.lightandmatter.com/lm/ ''Light and Matter''], (2011, Light and Matter), especially at Section [http://www.lightandmatter.com/html_books/lm/ch04/ch04.html#Section4.2 '''4.2, Newton's First Law'''], Section [http://www.lightandmatter.com/html_books/lm/ch04/ch04.html#Section4.3 '''4.3, Newton's Second Law'''], and Section [http://www.lightandmatter.com/html_books/lm/ch05/ch05.html#Section5.1 '''5.1, Newton's Third Law'''].}-</cite>

* <cite id=fow1999>{{cite book|last=R|first=Fowles G.. |last2=L|first2=Cassiday G.. |year=1999|title=Analytical Mechanics|edition=6th|publisher=Saunders College Publishing|isbn=978-0-03-022317-4}}</cite>

* <cite id=lik1973>{{cite book|author=Likins Peter W. |year=1973|title=Elements of Engineering Mechanics|publisher=McGraw-Hill Book Company|isbn=978-0-07-037852-0}}</cite>