Gravity

作者: hillj

分类: 学校时光, 自然奥妙

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Gravity pulls things together

big objects strong gravity

small objects weak gravity

small distance strong gravity

big distance weak gravity

home image from https://www.sciencelearn.org.nz/resources/268-gravity-and-satellite-motion both activity images are from http://epiphanyvideoworks.com/Science/Hughes/Units/ForcesContent.htm

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