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問題的種類

自然 國中

請問為何28題不能選C 謝謝

D2 D 均速度不能道接加起來十忆, 货(越來越慢, 上山:G 「代距離數: 50 m/s 205. to 127. 小明參加飛行訓練班,結訓時,教官要求他把飛機開到直線跑道上做等加速度 運動,由初速5m/s 開始加速到55m/s,共費時20秒。請問飛機運動過程的平 均加速度大小為多少m/s² ? (A)1.0 (B)1.5 (C)2.0 (D)2.5m/s²。 2.5 28. 電影「移動世界(Jumper)」中描述一個具有瞬間移動能力的移動人(jumper)大衛 IS 的故事。所謂瞬間移動就是指來往兩地所經過的路徑長為0,若每個移動人以 瞬間移動來往任意距離的兩地均只需要0.01秒入某天住在12樓的大衛想去找 位在1樓大樓管理員領取代收的包裹,1樓到12樓高度差為40公尺,已知大 樓的電梯每秒可以升降1公尺,則下列敘述何者正確?(不計移動過程中的水 平距離與時間) 405. (A)大衛搭電梯抵達1樓的路徑長跟使用瞬間移動抵達1樓的路徑長相同,所 以兩種方式的平均速率相同。 (B)大衛搭電梯抵達1樓的位移跟使用瞬間移動抵達1樓的位移相同,所以兩 種方式的平均速度相同。 (C)大衛使用瞬間移動抵達1樓,其平均速率為4000m/s。 (D)大衛搭電梯抵達1樓,其平均速度大小為1m/s。 0.015.40m 2m/s 0.25 29. 老曾對著牆壁打網球,若網球 10m/s的速率撞牆壁,反彈出來的速率為↓ 而碰撞牆壁的時間為0.2秒,則碰撞過程網球的加速度大 NA

已解決 回答數: 1
英文 國中

為什麼這兩張圖是一樣的?還有這題要怎麼判斷?

(33.~35.) People in Taiwan never worry about getting hungry at night when there is nothing at home. They can walk to the convenience stores and get anything they I want. In fact, in Taiwan, it is not possible that people fail to find a convenience store because it is part of our life. Convenience stores are working 24/7. In other words, finding a place to sit down and take a rest anytime is a piece of cake. In order to grow business, shopkeepers use some smart ways to have the buyers spend more. First, they put the most popular items at the buyers'eye level to let them see the items easily and often. Second, they drive the buyers to buy something cheap and small without thinking too much or give shoppers a special offer like "Buy One And Get One Free.” Third, they try to have the buyers stay at the convenience stores as long as possible by setting up a seating area. They think the buyers will buy one drink after another once they stay longer. In a study, 73 teenagers answer two of the questions. The pictures below show their interesting answers. Which of the following do you like? The taste of the foods. The service. 146 (63%) 132 (43.8%) The prices of the products. |12 (16.4%) The feelings in the convenience stores. 121 (28.8%) The polite clerks. 16(8.2%) The special offer. 14(19.2%) The way of showing the products. 21 (28.8%) 0 10 20 50 30 40 Which of the following do you like? The taste of the foods. The service. The prices of the products. The feelings in the convenience stores. The polite clerks. The special offer. The way of showing the products, 0 118(24.7%) 11(15.1%) 140(54.8%) 18(11%) 129 (39.7%) 19(12.3%) 17(9.6%) 10 20 30 40 50 convenience store 便利商店 level 高度 offer 優惠 result 結果 product 商品

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