The height h (in feet) of an object thrown vertically upward (after t seconds), is given by the function h=-16t^2+vt+s
(Where v is the initial velocity in ft/sec, s is the initial height in ft.)
A ball is thrown upward with an initial velocity of 112 ft/sec from an initial height of 128 ft, and allowed to fall on the ground.
a)What is the maximum height it reached?
b)At what time did it hit the ground?
(Answer must be "_ft.,_sec)

Question

The height h (in feet) of an object thrown vertically upward (after t seconds), is given by the function h=-16t^2+vt+s 
(Where v is the initial velocity in ft/sec, s is the initial height in ft.)
A ball is thrown upward with an initial velocity of 112 ft/sec from an initial height of 128 ft, and allowed to fall on the ground.
a)What is the maximum height it reached?
b)At what time did it hit the ground?
(Answer must be "_ft.,_sec)