Physics, 25.10.2021 01:00 ryanez5306

Khi có sự cố trên đường lái xa hãm phanh để đảm bảo an toàn nên giảm vận tốc từ 75 km/h xuống 45 km/h trên đoạn đường 8,8m.
a) Coi gia tốc xe không đổi, thì nó có giá trị bao nhiêu.
b) Khoảng thời gian cần phanh xe trong trường hợp trên là bao nhiêu?
c) Nếu lái xe tiếp tục phanh xe với gia tốc như lúc đầu, thì bao lâu xe dừng lại kể từ
lúc hãm phanh.

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Khi có sự cố trên đường lái xa hãm phanh để đảm bảo an toàn nên giảm vận tốc từ 75 km/h xuống 45 k...