100%
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如图。。。
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100% |
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![35天勇士[暑]](https://bbs.jd100.com/attachment/medal/bdf9a316a9af31b.jpg "35天勇士[暑]"){kind=small}
![28天勇士[暑]](https://bbs.jd100.com/attachment/medal/e87f38d2f0151f0.jpg "28天勇士[暑]"){kind=small}
![21天勇士[暑]](https://bbs.jd100.com/attachment/medal/63814ff34bb2a24.jpg "21天勇士[暑]"){kind=small}
![14天勇士[暑]](https://bbs.jd100.com/attachment/medal/ccbd3226d78250f.jpg "14天勇士[暑]"){kind=small}
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![14天勇士[春]](https://bbs.jd100.com/attachment/medal/0a2a8be87813938.png "14天勇士[春]"){kind=small}
![7天勇士[春]](https://bbs.jd100.com/attachment/medal/7b734d35544b9d3.png "7天勇士[春]"){kind=small}
![勇不止步[春]](https://bbs.jd100.com/attachment/medal/f783eb36b20a4e2.jpg "勇不止步[春]"){kind=small}
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![14天勇士[寒]](https://bbs.jd100.com/attachment/medal/9aacf8cc0ea8134.jpg "14天勇士[寒]"){kind=small}
![7天勇士[寒]](https://bbs.jd100.com/attachment/medal/3ae915c994fd934.jpg "7天勇士[寒]"){kind=small}
![20天大作战[2015]](https://bbs.jd100.com/attachment/medal/cec543c13f7ea1b.jpg "20天大作战[2015]"){kind=small}
![20天大作战[2014]](https://bbs.jd100.com/attachment/medal/465e7ccd53045d5.png "20天大作战[2014]"){kind=small}
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沙发#
发布于：2015-08-07 22:37
上抛的过程中加速度因为有阻力作用所以较之于无阻力更大，意味着同等抛出速度下更快到达最高点（有阻力、无阻力最高点不一致），所以T1<T0.在无阻情况下上升、 下降所用时间相同，在有阻力情况下加速度更小，所以使用时间更长， T2>T0.
总的来说，是T1<T0<T2. |
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板凳#
发布于：2015-08-08 17:17
StephenStark：上抛的过程中加速度因为有阻力作用所以较之于无阻力更大，意味着同等抛出速度下更快到达最高点（有阻力、无阻力最高点不一致），所以T1<T0.在无阻情况下上升、 下降所用时间相同，在有阻力情况下加速度更小，所以使用时间更长， T2>T0.是啊，按此说来BC选项都对啊。可她是单选。。。 |
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地板#
发布于：2015-08-11 10:37
没有人回复我吗？？？
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4楼#
发布于：2016-01-10 22:35
呃。。。。。自那以后忘了有个论坛
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