Free fall model: Position under gravity: s(t) = -(1/2)g t squared + v_0 t + s_0, where g = 32 ft/s squared or 9.8 m/s squared.
How to apply it: Use the free fall model to find when an object reaches maximum height (v(t) = 0) or hits the ground (s(t) = 0).
Course: AP Calculus AB · Unit: Contextual Applications of Differentiation
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