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  5. 求解 答案是ACD
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Ariel
Ariel

求解 答案是ACD

A B C 關 類題 某質點作直線等加速運動,每經 0.1 s拍照一次,在 照片的點痕片段如右圖所示,若x = 4.0 cm、x2 = 16.0 cm,設向右為正,則下列敘述哪些正確?(多 選) (A)質點的加速度為600cm/s²(B)B、C兩點之間的距離為 8.0 cm (C) B 點的瞬 時速率為 70 cm/s (D)A點的瞬時速率為10cm/s (E)A點至D點的平均速率 此為200 cm/s。 D X₂ 類題
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