物理-落體運動 - 考試
By Hedy
at 2013-03-30T20:18
at 2013-03-30T20:18
Table of Contents
(1)一石頭不慎由10 m/s等速上升的氣球落下,經過10秒後落到地面,不計空氣阻力,
該石頭自氣球落下的瞬間,氣球距離地面的高度為?
(2)一石頭不慎由10 m/s等速上升的氣球落下,經過10秒後落到地面,不計空氣阻力,
石頭落地時,氣球距離地面的高度為?
書上兩題給的答案皆為 H=10*10-1/2*9.8*10*10=-390 m
第二題石頭落下時,氣球還在上升,應該要加上氣球上升的距離吧?
請好心人幫忙解惑 謝謝~
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