Câu 1: Một vật nặng 3kg đặt trên mặt sàn nằm ngang a. Kể tên và biểu diễn các lực tác dụng vào vật theo tỉ xích 1cm ứng với 10N. b. Khi đẩy vật trên bằng một lực 10N theo phương ngang, chiều từ trái qua phải thì thấy vật không chuyển động. Hãy giải thích và biểu diễn các lực tác dụng vào vật khi đó. Các bạn giúp mình với ạ Thanks

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