A ball's height is h = 25t - 5t² metres after t… | StemPy Lab

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A ball's height is h = 25t - 5t² metres after t… | StemPy Lab

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A ball's height is h = 25t - 5t² metres after t seconds. For how long is it higher than 20 m?

MathematicsHardHigh School (9–10)GeneralAlgebra › Quadratic Equations Olympiad

Created by StemPy Lab

A ball's height is $h = 25t - 5t^2$ metres after $t$ seconds. For how long is it higher than $20\ \text{m}$ ?

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