A sandbag is released from a hot air balloon that is 400ft above the ground. Using the falling object model, h = –16t2 + s, wher
e h = height in feet, t = time in seconds, and s = initial height in feet, how long will it take for the sandbag to hit the ground? A.
25 seconds
B.
4 seconds
C.
5 seconds
D.
20 seconds