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khacbutchi218
2 năm trước
Một xe đang chuyển động với vận tốc 12m/s thì tăng ga chuyển động nhanh dần đều. Trong 3 giây xe đạt vận tốc 64,8km/h. a) Tính gia tốc của xe. b) Quãng đường xe đi được trong 3 giây đó. c) Vận tốc của xe đạt được sau 5 giây kể từ lúc tăng ga?
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