An object is dropped from a tower, 576 ft above the ground. The object's height above the ground t seconds after it is dropped is s(t) = 576 - 161 . Determine the velocity and acceleration of the object the moment it reaches the ground. The velocity of the object the moment it reaches the ground is fu/s. (Simplify your answer.) The acceleration of the object the moment it reaches the ground is fu/s?. (Simplify your answer.)