A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 17.0 m/s when the hand is 1.50 m above the ground. How long is the ball in the air before it hits the ground? (The student moves her hand out of the way.)

Answer 1

h(t) = 1.50 + 17.0t - 4.9t^2

Now just find t when h(t) = 0