Adiver jumps off a diving board that is 10ft above the water at a velocity of 12 ft/sec. For f20, in seconds, his height, s, in feet. above the water can be modeled by s (1) =-16 + 121 + 10. (a) How long is the diver in the air before he hits the water? Enter the exact answer. The diver is in the air for seconds. (b) What is the maximum height achieved and when does it occur? Enter the exact answers. The maximum height is feet. and it occurs after seconds.