Question

Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver remains in the air is 2.5 seconds, determine if the takeoff angle of the diver’s center of mass is greater than 45°.
bobpursley
horizontal velocity=5/2.5=2m/s

hf=hi+v't-4.9t^2
0=5+v'(2.5)-4.9(2.5)^2
solve for vertical velocity v'

now, find arctan v'/2.5 is it greater orless than 45 deg.