A 0.5 kg ball is dropped from a height of 40 meters. After falling under the influence of the force of gravity and a significant air-resistance force, the ball hits the ground with a kinetic energy of 55 J. Which of the following indicates the change in mechanical energy of the ball system and the change in mechanical energy of the ball-Earth system?
A) ball system +55 J, ball-Earth system +55 J
B) ball system -55 J, ball-Earth system +200 J
C) ball system +145 J, ball-Earth system -145 J
D) ball system +55 J, ball-Earth system -145 J
