| 标题 | 解决时间 | 回答数 | 回答者 |
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| 这一段做匀减速,只受摩擦力?????它 [牛顿定律] | 2021-08-15 | 2 | |
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| 求这一节的详细资料谢谢老师。 [牛顿定律] | 2021-08-15 | 3 | |
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| 这道题一点都没听懂,能仔细讲讲吗?先从 [直线运动] | 2021-08-15 | 7 | |
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