https://padlet.com/nhh24021981/2oj4o9gjcvx52ve1 So sánh Lực tiếp xúc và lực không tiếp xúc. Nêu ví dụ về Lực tiếp xúc và lực không tiếp xúc. en-us 2025-06-23 11:21:28 UTC 2025-06-23 12:27:26 UTC hello@padlet.com https://padlet.net/icons/8.0/png/2764.png nhh24021981 https://padlet.com/nhh24021981/2oj4o9gjcvx52ve1/wish/3499158139 Nhóm 1

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