[問題] 請問一題物理
各位75級大家好,上來問這麼簡單的題目真是不好意思。
這題答案給的是D,但我怎麼想都是A啊ˊ口ˋ。
假設重力加速度不變,那速度函數應成線性,再考量初速5m/s,A應該是比較合理的答案吧。
不知道是答案有錯還是我的思路錯了......
http://i.imgur.com/D8M828g.jpg
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推
12/13 12:53, , 1F
12/13 12:53, 1F
可是從氣球掉下來有慣性阿
※ 編輯: leo870319 (61.226.43.32), 12/13/2016 13:06:40
推
12/13 13:06, , 2F
12/13 13:06, 2F
不太懂......
+5m/s扣完應該是到高度頂點吧
加速度跟速度方向相反,怎麼可能越扣越多
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12/13 13:08, , 3F
12/13 13:08, 3F
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12/13 13:11, , 4F
12/13 13:11, 4F
※ 編輯: leo870319 (61.226.43.32), 12/13/2016 13:13:11
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12/13 13:13, , 5F
12/13 13:13, 5F
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12/13 13:13, , 6F
12/13 13:13, 6F
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12/13 13:13, , 7F
12/13 13:13, 7F
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12/13 13:14, , 8F
12/13 13:14, 8F
喔喔喔喔懂了
太感謝了
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12/13 13:17, , 9F
12/13 13:17, 9F
※ 編輯: leo870319 (61.226.43.32), 12/13/2016 13:22:31
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12/13 13:36, , 10F
12/13 13:36, 10F
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12/13 13:36, , 11F
12/13 13:36, 11F
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12/13 13:36, , 12F
12/13 13:36, 12F
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12/13 13:59, , 13F
12/13 13:59, 13F
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12/13 15:10, , 14F
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12/13 15:25, , 23F
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12/13 15:25, , 24F
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12/13 15:25, , 25F
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12/13 15:25, , 26F
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12/13 16:14, , 27F
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12/13 16:14, , 28F
12/13 16:14, 28F
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12/13 16:14, , 29F
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12/13 16:14, , 30F
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12/13 16:41, , 31F
12/13 16:41, 31F
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12/13 16:44, , 32F
12/13 16:44, 32F
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12/13 16:44, , 33F
12/13 16:44, 33F
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12/13 18:27, , 34F
12/13 18:27, 34F
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12/13 19:22, , 35F
12/13 19:22, 35F
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12/13 19:29, , 36F
12/13 19:29, 36F
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12/13 20:32, , 37F
12/13 20:32, 37F
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12/14 03:50, , 38F
12/14 03:50, 38F
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12/14 03:51, , 39F
12/14 03:51, 39F
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12/14 21:40, , 40F
12/14 21:40, 40F
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12/16 23:07, , 41F
12/16 23:07, 41F
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12/17 00:08, , 42F
12/17 00:08, 42F
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12/17 00:08, , 43F
12/17 00:08, 43F
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