Question: Please i need help with both question ,asap ! thanks Suppose a ball is thrown straight up from ground level with initial velocity ( 80

Please i need help with both question ,asap ! thanks Suppose a ball is thrown straight up from ground level with initial velocity $ 80 \mathrm{ft} / \mathrm{s} $. Its height in feet after $ t $ seconds is given by $ y=80 t-16 t^{2} $. Find the ave 2 answers

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