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Physics, 12.09.2021 14:00 trevorhenyan51
một ôtô chuyển động quãng đường đầu tiên với vận tốc 12km/h trong 0,2h, trên đoạn đường còn lại chuyển động với vận tốc 20km/h trong 0,3h. Tính vận tốc trung bình của ôtô trong suốt thời gian chuyển động. (giúp mik với nha)
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một ôtô chuyển động quãng đường đầu tiên với vận tốc 12km/h trong 0,2h, trên đoạn đường còn lại chuy...
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