If a ball is thrown vertically upward from the roof of $48$ foot building with a velocity of $32$ ft/sec, its height after $t$ seconds is $s(t) = 48 + 32 t - 16 t^2$. What is the maximum height the ball reaches?
What is the velocity of the ball when it hits the ground (height $0$)?
What is the acceleration of the ball when it hits the ground (height $0$)?