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物體以初速v0被鉛直上拋，重力加速度g，則自拋出到最大高度的一半處，所需

時間為何？

Ans:

能量方程式: m*V0^2/2=m*g*h

獲得最大高度: h=V0^2/2g

最大高度一半: h/2=V0^2/4g

能量方程式: m*V0^2/2=m*g*(h/2)+m*V^2/2

獲得速度為: V^2=V0^2-V0^2/2=V0^2/2 => V=V0/√2

所以所需時間為:

t=(V0-V)/g

=(V0-V0/√2)/g

=V0(√2-1)/g√2.........ans

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NOWnews.com 今日新聞網

2013年8月5日 14:37

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• 王毅表示，處理好南海問題對維護和促進中越關係十分重要。中越要加緊落實兩黨兩國領導人達成的共識，推進南海問題的妥善解決，從挑戰中尋找機遇，把摩擦轉化為合作，防止干擾兩國關係大局。

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【劉志原╱台北報導】吳姓男子今年2月間任職於台北市NOVA商場時，利用職務之便，將店內價值590元的迷你無線路由器拿回家自用，並將訂價800元的4G記憶體以600元售出後侵吞貨款，台北地院依業務侵占罪，判他11個月，可易科罰金33萬元；仍可上訴。

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【更多新聞，請看《蘋果陪審團》粉絲團】

onlineopinions@appledaily.com.tw

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你只要跟衛生或環保股長講就好囉~
然後一定要找一天去補打掃，不然開學好像會被愛校的樣子(這我不太確定，但記得返校打掃若沒在假期間完成會很麻煩
然後記得一定要簽到和簽退唷!不然會沒有紀錄

參考資料 我自己(高三學姊

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【綜合報導】原本體重達200公斤的遼寧最胖女子崔偉傑，在教練指導下進行地獄式鍛煉，經歷了幾次呼吸暫停、心臟衰竭的起死回生考驗，終於成功在3個月減去55公斤！

這個地獄式鍛煉是每天運動4小時，分3次進行，包括慢走5公里及水中有氧運動等，還要嚴格依照少鹽及少油的飲食標準。

她之後還要接受兩個月的鍛煉和營養餐單，讓皮膚恢復彈性。從前因嫌她肥胖而離開她的前夫，得知她減肥後也來電求復合，據了解崔偉傑沒有答應。

onlineopinions@appledaily.com.tw

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作者cataphract (我發現我的時間不多了)

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標題[問題] Sony ZL相簿模式可以看到子子資料夾嗎？

時間Mon Aug 5 23:15:04 2013

→ DiChik :不行吧 相簿是直接抓圖 跟資料夾不同 08/05 23:17

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