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By Paul W. Zitzewitz. He is the author of the high school physics textbook "Physics: Principles and Problems.". Author Paul W. Zitzewitz. The text is clear and easy to understand.". Answers are in plain nontechnical English, and formulas and jargon are kept to a minimum.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.