Answered

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với vo= 72km/h thì hãm phanh chuyển động chậm dần đều, sau 10s đạt v1= 54km/h.

a) Sau bao lâu kể từ lúc hãm phanh thì đoàn tàu đạt v = 36km/h và sau bao lâu thì dừng hẳn?

b) Tính quãng đường đoàn tàu đi được cho đến lúc dừng lại?

Sagot :

Justine890

Answer:

B

Explanation:

Basta B isagot Mona Tama yan

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