发表于2025-01-07
Forces and Motion 2025 pdf epub mobi 电子书
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Forces and Motion explores gravity, friction, centrifugal force, and the underlying laws of physics that help machines work. Simple machines such as levers and pulleys, floating and sinking, springs, elastic, and flying machines are all investigated in fun, hands-on experiments that make it easy for anyone to become a rocket scientist
Forces and Motion 2025 pdf epub mobi 电子书