Physics
Physics, 12.09.2021 14:40, aldaysein

Một vật DĐĐH với pt: x = 8cos2pt (cm). Tìm tốc độ trung bình của vật a/ trong một nửa chu kỳ b/ trong một phần tư chu kỳ kể từ lúc t = 0

c/ trên đoạn từ VTCB đến vị trí x = 4cm

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Một vật DĐĐH với pt: x = 8cos2pt (cm). Tìm tốc độ trung bình của vật a/ trong một nửa chu kỳ b/ tr...

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