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A ball is thrown vertically upward from the top of the building 144 feet tall with an initial velocity of 128 feet per second The

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A ball is thrown vertically upward from the top of the building 144 feet tall with an initial velocity of 128 feet per second The distance 8 in feet of the ball from the ground after t seconds is S 144 128t 16t2 After how many seconds does the ball strike the ground O 8 sec 9 sec 145 sec 11 sec

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