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範例:水平拋射與著地時間[83推甄]

甲、乙兩鐵球同時由相同高度釋出,甲球100以水平射出,乙球200垂直自由下墜,兩球均落在同一水平地面。若不計空氣阻力,下列敘述何者正確?(A)甲球經過的路徑較長,比較慢著地 (B)甲球運動的速率較快,比較先著地 (C)乙球比甲球受的重力大,故乙球先著地 (D)兩球都以相同的加速度下墜,故同時著地。[83推薦甄選]


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Posted in 歷屆學測(推甄)考題, 水平拋射, 物體運動的軌跡.

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