A projectile is launched from ground level with an initial velocity of vo feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by s-16t+Vot. Find the time(s) that the projectile will (a) reach a height of 128 ft and (b) return to the ground when vo - 96 feet per second. (a) Find the time(s) that the projectile will reach a height of 128 ft when v0-96 feet per second. Select the correct choice below and. if necessary, fill in the answer box 2 to complete your choice. A· seconds (Use a comma to separate answers as needed.) B. The projectile does not reach 128 feet.

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