Use the equation [tex]vf = vo + a \times t[/tex] plug in the variables for the equation. Use 0 for Vf because at the highest point the velocity would be zero. Use -9.8 for acceleration because that is the speed at which gravity pulls down. [tex]0 = 20.2 + ( - 9.8) \times t[/tex] your answer would be 2.06122 seconds.