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Physics, 10.10.2021 15:00 brandontru

Một vật được thả rơi từ độ cao 20m xuống đất. Lấy g = 10m/s^2. a/ Sao bao lâu vật rơi chạm đất?
b/ Tìm độ lớn vận tốc lúc vật vừa chạm mặt đất?
c/ Tìm quãng đường vật rơi được sau 1 giây kể từ lúc thả?

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Một vật được thả rơi từ độ cao 20m xuống đất. Lấy g = 10m/s^2. a/ Sao bao lâu vật rơi chạm đất?
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