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Algebra
Pregunta

A bird drops a stick to the ground from a height o...

A bird drops a stick to the ground from a height of \( 90 ft \) . The function \( h = - 16 t ^ { 2 } + 90 \) gives the stick's approximate height \( h \) above the ground, in feet, after \( t \) seconds. At about what time does the stick hit the ground? 

Answer

\(- 16t^{2}+ 90= 0\\t= \sqrt{\frac{90}{16}} \approx 2.4\)

Solución
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