功和机械能 (12 20:43:55)质量50KG的雪橇上装载了350KG的货物,一匹马拉着它将货物送到了3000m外的货场,若雪撬行进中受到的摩擦力我800N,则马运货做的功是多少?小明提着10N的水桶,他一楼走向二楼
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![功和机械能 (12 20:43:55)质量50KG的雪橇上装载了350KG的货物,一匹马拉着它将货物送到了3000m外的货场,若雪撬行进中受到的摩擦力我800N,则马运货做的功是多少?小明提着10N的水桶,他一楼走向二楼](/uploads/image/z/1954329-33-9.jpg?t=%E5%8A%9F%E5%92%8C%E6%9C%BA%E6%A2%B0%E8%83%BD+%2812+20%3A43%3A55%29%E8%B4%A8%E9%87%8F50KG%E7%9A%84%E9%9B%AA%E6%A9%87%E4%B8%8A%E8%A3%85%E8%BD%BD%E4%BA%86350KG%E7%9A%84%E8%B4%A7%E7%89%A9%2C%E4%B8%80%E5%8C%B9%E9%A9%AC%E6%8B%89%E7%9D%80%E5%AE%83%E5%B0%86%E8%B4%A7%E7%89%A9%E9%80%81%E5%88%B0%E4%BA%863000m%E5%A4%96%E7%9A%84%E8%B4%A7%E5%9C%BA%2C%E8%8B%A5%E9%9B%AA%E6%92%AC%E8%A1%8C%E8%BF%9B%E4%B8%AD%E5%8F%97%E5%88%B0%E7%9A%84%E6%91%A9%E6%93%A6%E5%8A%9B%E6%88%91800N%2C%E5%88%99%E9%A9%AC%E8%BF%90%E8%B4%A7%E5%81%9A%E7%9A%84%E5%8A%9F%E6%98%AF%E5%A4%9A%E5%B0%91%3F%E5%B0%8F%E6%98%8E%E6%8F%90%E7%9D%8010N%E7%9A%84%E6%B0%B4%E6%A1%B6%2C%E4%BB%96%E4%B8%80%E6%A5%BC%E8%B5%B0%E5%90%91%E4%BA%8C%E6%A5%BC)
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