Mathematics, 29.06.2019 16:20, paytonxxburns05

If an object is propelled upward from a height of s feet at an initial velocity of v feet per second, then its height h after t seconds is given by the equation h=-16t^2 +vt+ s , where h is in feet. if the object is propelled from a height of 8 feet with an initial velocity of 64 feet per seconds , it's height h is given by the equation h=-16t^2+64t+8 after how many seconds is the height 68 feet? the time is .

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If an object is propelled upward from a height of s feet at an initial velocity of v feet per second...