A ball is thrown vertically upward with an initial velocity of 48ft/sec and a height of 8ft, then its height s(t) from the ground level at time t is given by s(t) = -16t2 + 48t + 8.
(1) Determine the time it takes the ball to reach its maximum height:
(2) Determine the maximum height the ball reaches.
(3) Determine the time it takes the ball to hit the ground.