A swimmer bounces almost straight up from a diving board and falls vertically feet first into a pool. She starts with a speed of 4.8 m/s, and her takeoff point is 1.6 m above the pool's surface. For how long are her feet in the air, in seconds? What is the height above the board, in meters, of her highest point? What is her velocity, in meters per second, when her feet hit the water? Assume the vertical component of the velocity is positive upwards.