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 = - 162 + vot. Find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when vo = 128 feet per second.
(a) Find the time(s) that the projectile will reach a height of 192 ft when Vo = 128 feet per second. Select the correct choice below and, if necessary, fill in the answer
box to complete your choice.
OA.
seconds (Use a comma to separate answers as needed.)
OB. The projectile does not reach 192 feet.