A projectile is launched from ground level with an initial

Last updated: 7/17/2022

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 = -16t²+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. A. seconds (Use a comma to separate answers as needed.) B. The projectile does not reach 192 feet. (b) The projectile returns to the ground after second(s).