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Simple Machines in Sports (Simple Machines Everywhere)

Simple Machines in Sports (Simple Machines Everywhere)
出版社:Powerkids Pr
出版時間:2014-08
頁數(shù):24
虛構:非虛構
ISBN:9781477768297
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Kids know that hockey sticks, water bottles with screw-on lids, and cleats are all used in sports. It may, however, be a surprise to them to learn that they?re all machines. This book teaches sports enthusiasts how to spot the simple machines they?ve never noticed and to analyze their favorite games as never before. Labeled diagrams explain concepts such as mechanical advantage, and examples of each kind of simple machine abound.
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