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(1)5コマ分だから 0.1×5=0.5(秒)
(2)だんだん間隔が狭くなってるので イ
(3)①110cmを0.5秒で進んでるので
110÷0.5=220(cm/s)
②CD間の84cmを0.4秒(4コマ)で進んでるので
84÷0.4=210(cm/s)

しい

ありがとうございます😢

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