12.张鲁同学用100N的力,将重力6N的足球一脚踢出去20m远,他对足球做的功是( )A.2000J B.120J C.2120J D.条件不足,无法确定13.一位体重为500N的同学在跳绳测试中,1分钟跳180次,每
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![12.张鲁同学用100N的力,将重力6N的足球一脚踢出去20m远,他对足球做的功是( )A.2000J B.120J C.2120J D.条件不足,无法确定13.一位体重为500N的同学在跳绳测试中,1分钟跳180次,每](/uploads/image/z/6681368-56-8.jpg?t=12%EF%BC%8E%E5%BC%A0%E9%B2%81%E5%90%8C%E5%AD%A6%E7%94%A8100N%E7%9A%84%E5%8A%9B%2C%E5%B0%86%E9%87%8D%E5%8A%9B6N%E7%9A%84%E8%B6%B3%E7%90%83%E4%B8%80%E8%84%9A%E8%B8%A2%E5%87%BA%E5%8E%BB20m%E8%BF%9C%2C%E4%BB%96%E5%AF%B9%E8%B6%B3%E7%90%83%E5%81%9A%E7%9A%84%E5%8A%9F%E6%98%AF%28+%29A%EF%BC%8E2000J%E3%80%80%E3%80%80%E3%80%80%E3%80%80B%EF%BC%8E120J+C%EF%BC%8E2120J%E3%80%80%E3%80%80D%EF%BC%8E%E6%9D%A1%E4%BB%B6%E4%B8%8D%E8%B6%B3%2C%E6%97%A0%E6%B3%95%E7%A1%AE%E5%AE%9A13%EF%BC%8E%E4%B8%80%E4%BD%8D%E4%BD%93%E9%87%8D%E4%B8%BA500N%E7%9A%84%E5%90%8C%E5%AD%A6%E5%9C%A8%E8%B7%B3%E7%BB%B3%E6%B5%8B%E8%AF%95%E4%B8%AD%EF%BC%8C1%E5%88%86%E9%92%9F%E8%B7%B3180%E6%AC%A1%EF%BC%8C%E6%AF%8F)
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