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Algebra
Pregunta

A ball is thrown from an initial height of \(5\) f...

A ball is thrown from an initial height of \(5\) feet with an initial upward velocity of \(21 ft / s\) . The ball's height \(h\) (in feet) after \(t\) seconds is given by the following. 

How to solve

\(h = 5 + 21 t - 16 t ^ { 2 }\) 

\(t = \square\) seconds 

Answer

t = 0.42 s

t = 0.89 s

Solución
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