To find the maximum height you have to calculate the initial velocity in the y axis.. to do that resolve the velocity vector in the y direction which is equal to [email protected] 27*√3/2 = 23.4 m/s thus using kinematics. v^2 = u^2 + 2as 23.4*23.4 /19.6 = s 27.96 that's 28 m approximately
