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ngquyetntp80
2 năm trước
Giúp mình nhanh nhất có thể nha)) nhớ trình bày đầy đủ Một vật có KL m=0,3 kg nằm yên trên mp nằm ngang không ma sát. Tác dụng lên vật lực kéo=5N hợp với phương ngang 1 góc 30°. a. Tính công do lực thực hiện sau thời gian 5s. b. Tính công suất tức thời tại thời điểm cuối.
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