okay so the position function would be
s(t) = -16t^2 + 128
so the answer to part a would be 128
but i still can't figure out the velocity when it would hit the ground
v(t) = -32t
If a ball is thrown vertically upward from the roof of 64 foot building with a velocity of 64 ft/sec, then what is the maximum height the ball reaches?
What is the velocity of the ball when it hits the ground?
s(0) = 64
v(0) = 64
??