Jumper's Projection Angle
To achieve the optimal projection angle for maximum VERTICAL jump height, you would leave the ground with a projection angle of 90 degrees.
FOR HORIZONTAL JUMP:
If RPH = zero, leave the ground with a projection angle of 45 degrees
If RPH = POSITIVE, the jumper's projection angle should be LESS THAN 45 degrees
If RPH = NEGATIVE, the jumper's projection angle should be GREATER THAN 45 degrees