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Physics, 25.10.2021 22:30 krystalhurst97
Một vật được thả tự do từ độ cao 90m xuống mặt đất. Bỏ qua lực cân bằng không khí. Lấy gia tốc rơi tự do g=10m/s2
a. Tính vận tốc của vật khi chạm đất
b. Tính quãng đường vật rơi trong 2s
c. Tính quãng đường vật rơi trong nửa cuối giây thứ 1
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Một vật được thả tự do từ độ cao 90m xuống mặt đất. Bỏ qua lực cân bằng không khí. Lấy gia tốc rơi t...
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