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Q10: If a ball is thrown directly upward with a velocity of 40ft/s, its height in (feet) after t seconds is given by y =

Q10: If a ball is thrown directly upward with a velocity of 40ft/s, its height in (feet) after t seconds is given by y = 40t - 16t2. What is the maximum height attained by the ball?

Hint: Find the vertex of this quadratic function. The maximum height would be the y value which is the same as value of K. Vertex Formula: h = -b/2h and K= f(h).

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