语文版中职英语拓展模块unit8generalscience2内容摘要：
An athlete applies a force of 2020 newtons to move up the weights to the height of 2 meters. How much work has the athlete done? 2020N 2m Work done = 2020N X 2m =4000J 1 joule If a force of 1 N causes an object to move 1 meter, then 1J of work has been done. 1N 1m The definition of “power” • Power is a measure。阅读剩余 0%
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