hidden march 24

 

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consider a book at rest on a table. The Earth's gravity pulls down upon the book. The "reaction" to that "action" is not the support force from the table holding up the book, but the gravitational pull of the book acting on the Earth. source under third law




bouncing ball in forward motion photographed at 25 frames per second using a stroboscopic flashsource


amazon re big box not delivered


gov site for homeschooling


Ast Sci old header   20 04


Part 2 builder  https://www.blogger.com/blog/pages/611149368896510218


club builder     https://www.blogger.com/u/1/blog/pages/7040417745889102616


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