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lamthanhhien9a3
2 năm trước
Bài 5: 1 vật chuyển động nhanh dần đều, trong giây thứ tư đi được 5,5 m. Trong giây thứ 5 đi được 6,5 m. Tính gia tốc a. 1 ô tô chuyển động biến đổi đều. Trong 5s cuối trước khi dừng hẳn thì đi được 3,125 m. Tìm gia tốc. Bài 6: 1 xe chuyển động chậm dần đều. Quãng đường xe đi được trong 2s đầu dài hơn quãng đường đi được trong 2s cuối là 36m. Quãng đường giữa 2 khoảng thời gian trên là 160m. Tìm thời gian cho đến khi dừng hẳn.
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