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bubbyv13 Group Title

a foul tip of a baseball is hit straight upward. The function s(t) = -16t^2 +96t+4 describes the ball's height above the ground, s(t), in feet, t seconds after it was hit. Let s'(t)= -32t +96. Use the quadratic formula to determine how many seconds it will take for the ball to hit the ground.

  • one year ago
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  1. Euler271 Group Title
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    s(t) is the height above the ground. you want to find the t values which make s(t) = 0. s'(t) seems unnecessary for this problem. quadratic formula for \[at^{2} + b{t} + c\] t = \[\frac{ -b \pm \sqrt{b^{2} - 4ac} }{ 2a }\]

    • one year ago
  2. Euler271 Group Title
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    it should say: quadratic formula for \[at^{2} + bt +c = 0\] let me know if you have questions about what i said

    • one year ago
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