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Physics, 27.09.2021 20:50 edisonsitesuper9312

A) Khi nào một vật được coi là chuyển động ? Cho ví dụ ? b) Khi nào một vật coi là đứng yên? Cho ví dụ ?
c) Theo em câu phát biểu “ Khi khoảng cách từ vật đến vật mốc không thay đổi theo thời gian thì vật đứng yên so với vật mốc”. Có luôn đúng không, vì sao?

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A) Khi nào một vật được coi là chuyển động ? Cho ví dụ ? b) Khi nào một vật coi là đứng yên? Cho v...
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