http://www.ck12.org Chapter 4. Newton’s Three Laws
4.4 References
- Image copyright Denis Cristo, 2014; modified by CK-12 Foundation - Christopher Auyeung. http://www.s
hutterstock.com. Used under license from Shutterstock.com - Courtesy of Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/NASA. http
://commons.wikimedia.org/wiki/File:New_horizons_Pluto.jpg. Public Domain - Christopher Auyeung. CK-12 Foundation.
- Image copyright Denis Cristo, 2014; modified by CK-12 Foundation - Christopher Auyeung. http://www.s
hutterstock.com. Used under license from Shutterstock.com - Laura Guerin. CK-12 Foundation.
- Image copyright artenot, 2014; modified by CK-12 Foundation - Raymond Chou. http://www.shutterstock.
com. Used under license from Shutterstock.com - Raymond Chou. CK-12 Foundation.
- Christopher Auyeung, Raymond Chou. CK-12 Foundation.
- Christopher Auyeung, Raymond Chou. CK-12 Foundation.
- From Emmanuel Muller-Baden, Ed. (1905). http://commons.wikimedia.org/wiki/File:Atwoods_machine.png
. Public Domain - Christopher Auyueng, Raymond Chou. CK-12 Foundation.