What is the best example of forces acting in the same direction?
A boy lifting his chest off the ground doing a push up
Two football players pushing a tackling sled
A person pulling out of a garden hose from its reel
Two dogs playing tug of war with a rope

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force