Mathematics, 17.03.2020 21:57, selenaK9514

A smart-phone is thrown upwards from the top of a 448-foot building with an initial velocity of 48 feet per second. The height h of the smart-phone after t seconds is given by the quadratic equation h = − 16 t 2 + 48 t + 448 h=-16t2+48t+448. When will the smart-phone hit the ground?

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A smart-phone is thrown upwards from the top of a 448-foot building with an initial velocity of 48 f...