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範例:水平拋射與位移

右圖是物體作水平拋射運動時的一段軌跡,ABC軌跡中的三點,圖中OC為水平方向,OA為鉛直方向,請根據圖中的數據,計算:(1)該拋體運動的水平初速度大小。(2)找出拋出點的正確位置。(A點的上????幾公尺處?)(注意:A點非拋出點)[87北聯] [g=9.8 m/s2]


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