2124802010129 2124802010129
  • 13-12-2021
  • Physics
contestada

Một chất điểm khối lượng m=200g chuyển
động chậm dần với vận tốc biến đổi theo qui luật
v=30 – 0,4t2 (SI). Lực hãm tác dụng vào chất điểm
lúc t = 5 giây là
A. 8 N B. 0,8 N C. 4 N D. 0,4 N

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rhinosquad24 rhinosquad24
  • 13-12-2021
Can you please translate to English?
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