From the equations of linear motion, v² = u² + 2as where v is the final velocity, u is the initial velocity and a is the gravitational acceleration, and s is the displacement, Thus, v² = u² -2gs, but v=0 hence, u² = 2gs = 2×9.81×0.43 = 8.4366 u = √8.4366 =2.905 m/s Hence the initial velocity is 2.905 m/s Then using the equation v= u +gt . Therefore, v = u -gt. (-g because the player is jumping against the gravity) but, v = 0 Thus, u= gt Hence, t = u/g = 2.905/9.81 = 0.296 seconds
