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Physics, 08.12.2021 18:40 cajunldy2001

. Người ta bắn một viên đạn (hình 5.14) có khối lượng vào trong một khối có khối lượng M = 2kg ban đầu nằm yên trên mép của một cái bàn cao h = 1m. Sau va chạm, viên đạn vẫn cò n nằm trong khối và toàn bộ khối có viên bàn rơi cách chân bàn d = 2m như hình vẽ. Xác định vận tốc ban đầu của viên đạn

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. Người ta bắn một viên đạn (hình 5.14) có khối lượng vào trong một khối có khối lượng M = 2kg ban đ...
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