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xoy2000
2 năm trước
Một chất điểm dao động điều hòa trên trục Ox có chu kì T=0,5 s và biên độ A. Tại thời điểm t=0 chất điểm đi qua vị trí cân bằng theo chiều âm. Kể từ thời điểm t=0, thời điểm chất điểm đi qua li độ x= A/2 lần thứ 2020 gần với Giải chi tiết giúp mk vs
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