Re: [問題] 一題數學(其實感覺不是數學= =)
※ 引述《s19037 (好難想...)》之銘言:
: 小明觀察一個飛行氣球,
: 發現其方向一直維持在正前方,
: 而仰角以等速增加,
: 已知氣球高度維持不變,
: 則氣球,
: (A)等速飛行
: (B)加速向小明飛來
: (C)減速向小明飛來
: (D)加速離小明飛離
: (E)減速離小明飛離
: 講一下原因~和答案~
: 謝謝^^
不要送我好人卡謝謝
丁 丙 乙 甲
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/\ 地平線
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C
甲的仰角22.5度
乙的仰角45度
丙的仰角67.5度
丁的仰角90度
應該很明顯甲乙>乙丙>丙丁吧(茶
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