Science
Junior High
問第三題的第一題，有第一次的折回嗎？我怎麼看不懂😨
3.阿丹自學校向北出發,其位置與時間的關係如圖,試回答下列問題:
位置(E)
$200-
m1000
0123456
(1)阿丹第一次折回是在出發【
時間(秒)
】分鐘後。
/400
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