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範例：斜向拋射與活動靶

在高於海平面120米的崖頂有一海岸砲，若一敵艦迎面以20m/s駛來，今以仰角30o初速100m/s發射砲彈恰可擊中敵艦(g=10m/s2) (1)砲彈自射出至擊中敵艦費時若干秒? (2)發射砲彈時，敵艦離海岸多遠?


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By admin – 2010 年 08 月 19 日

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