A ball is thrown straight up into the air from an initial height of 5 feet at time t = 0. The height, in feet, of the ball above the ground is given by h(t), where t is measured in seconds for 0 ≤ t ≤ 15. Based on the values of t and h(t) given in the table, for which value of t would the speed of the ball most likely be the greatest? t (seconds) 0 3 6 9 12 15
h(t) (feet) 5 12 15 11 6 0
2 seconds
5 seconds
9 seconds
15 seconds