Question

Xác định phương và chiều của lực ma sát trong các hình 44.2?

Answer 1

- Lực ma sát trong Hình 44.2 a và 44.2 b có:

+ Phương: nằm ngang.

+ Chiều: từ phải sang trái.

Answer 2

học sinh ngoan 

 

Answer 3

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Answer 4

Phương: Ngang

Chiều: Từ trái sang phải

Answer 5

Phương: nằm ngang