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5跳蚤 0.1 5.家駿不小心將拿在右手中的巧克力球和錢幣鬆手後,同一高度由靜止垂直掉落,則地面上巧克力球破碎,錢幣完整,請問下列敘述何者正確?(不考慮空氣阻力)(A)質量大小不知道則無法比較 (B)
問題詳情
5跳蚤 0.1 5.家駿不小心將拿在右手中的巧克力球和錢幣鬆手後,同一高度由靜止垂直掉落,則地面上巧克力球破碎,錢幣完整,請問下列敘述何者正確?(不考慮空氣阻力)
(A)質量大小不知道則無法比較
(B)落地前瞬間,錢幣瞬時速度較大
(C)落地前瞬間,巧克力球瞬時速度較大
(D)落地前瞬間,兩者的瞬時速度一樣大。
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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