are adding energy to the ball while gravity is sucking energy out of the ball, and when you throw the ball downward, both you and gravity are adding energy to the ball.
(gravity; is sucking; energy; out of the ball) (you; throw; the ball downward) (both you and gravity; are adding; energy; to the ball; T:when you throw the ball downward)
gravity you both you and gravity
is sucking throw are adding
energy out of the ball
the ball downward
energy to the ball T:when you throw the ball downward