Sort the situations below by whether work is done or not..a. on barbells as you lift them and place them on the rack. on the door as you push against it and open it. b. on the piano when you drop it from the fourth floor to the ground floor. c. on the locked door that remains closed while you try to pull it open. d. on the dishes when you pull a tablecloth out from under them and they remain in place. e. on the bowling ball that you are holding while waiting for your turn to bowl. f. on a shopping cart as you push it around the store.