Question: The path of a falling object is given by the function s = -16t2 + Vot + so where Vo represents the initial velocity in ft/sec & so represents the initial height. The variable t is time in seconds, & s is the height of the object in feet. 

[A] How high is the rock after 0.5 seconds? 
[B] If a rock is thrown upward with an initial velocity of 32 feet per second from the top of a 40-foot building, write the height equation using this information.
[C] Find the maximum height?
[D] After how many seconds will the rock reach maximum height?