ntlq270702 ntlq270702
  • 12-10-2021
  • Physics
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Đồ thị hình vẽ biểu diễn sự biến thiên tốc độ của một vật chuyển động thẳng theo thời gian, biết góc  = 300. Nếu khối lượng của vật là 20 kg thì hợp lực tác dụng vào vật có độ lớn là bao nhiêu ?




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lamlamtuyen240202 lamlamtuyen240202
  • 14-10-2021

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