If a ball is thrown vertically upward with an initial velocity of 96 ft/s, then its height after t seconds is s = 96t -16t(consider

If a ball is thrown vertically upward with an initial velocity of 96 ft/s, then its height after t seconds is s = 96t -16t²(consider up to the positive direction)(a) What is the maximum height (in ft) reached by the ball?(b) What is the velocity (in ft/s) of the ball when it is 128 ft above the ground on its way up?What is the velocity (in ft/st of the ball when it is 128 ft above the ground on its way down?