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Physics, 20.07.2021 08:30 liltrewill7008
Một vật có khối lượng m =20 kg được ném thẳng đứng lên cao. Ban đầu vật đứng yên. Lực cản của không khí FC = k. m (với hệ số cản là k=0,2). Hãy tìm quy luật chuyển dộng của vật và tính gia tốc của vật lúc t= 3s. Biết gia tốc trọng trường g= 9,81 m/s2
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Một vật có khối lượng m =20 kg được ném thẳng đứng lên cao. Ban đầu vật đứng yên. Lực cản của không...
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