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Mathematics, 03.05.2020 13:27 davelopez979

A smart-phone is thrown upwards from the top of a 672-foot building with an initial velocity of 16 feet per second. The height h of the smart-phone after t seconds is given by the quadratic equation
h=βˆ’16t^2+16t+672
. When will the smart-phone hit the ground?

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