Posted by **Alyson** on Monday, October 3, 2011 at 11:16pm.

11. A rocket is fired upward from some initial height above the ground. Its height h in feet above the ground t seconds after it is fired is given by h = -16t2 + 48t +448.

(i) What is its initial height? __________ ft.

(ii) What is its maximum height? ___________ ft.

(iii) How long does it take to reach the ground? __________ sec.

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