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1. 老鷹在空中叼著一顆小石子飛行,在過程中老鷹將嘴巴的石子放掉,假設石子在下落過程中做等加速運動,關於其力學能變化的情形,下列何者正確?(A)重力位能漸增,動能漸減 (B)重力位能漸減,動能漸增 (
問題詳情
1. 老鷹在空中叼著一顆小石子飛行,在過程中老鷹將嘴巴的石子放掉,假設石子在下落過程中做等加速運動,關於其力學能變化的情形,下列何者正確?
(A)重力位能漸增,動能漸減
(B)重力位能漸減,動能漸增
(C)動能位能皆減少
(D)重力位能漸減,動能不變
參考答案
答案:B
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