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ZX-59380FFEFF2025年11月国际A卷 · 第 9 题
2025年11月国际A卷 · 原库模块 2 · Q9 原库参考解析
\( h\left(t\right)=-16t^2+b \)
The function h estimates an object's height, in feet, above the ground t seconds after the object is dropped, where b is a constant. The function estimates that the object is 19.36 feet above the ground when it is dropped at \( t=0 \). How many seconds after being dropped does the function estimate the object will hit the ground?
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