Mathematics, 23.05.2020 08:01, sabon

A ball is thrown downward from the top of a 240-foot building with an initial velocity of 12 feet per second. The height of the ball h in feet after t seconds is given by the equation h= -16t^2 - 12t + 240. How long after the ball is thrown will it strike the ground?

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A ball is thrown downward from the top of a 240-foot building with an initial velocity of 12 feet pe...