gravitational potential energy

5:04

4:33

11:13

8:03

2:25

8:06

18:25

5:11

12:47

3:24

8:47

2:33

9:12

2:04

5:29

5:27

10:24

59:59

13:18

5:19

9:57

2:55

26:09

1:07:28

12:57

10:27

10:50

1:10:28

7:35

1:59

13:34

23:03

5:49

2:18

6:24

4:53

34:12

1:53

1:00:36

11:30

1:38

4:15

6:55

5:15

1:01:44

10:52

2:18

2:41

24:05

4:42

10:24

2:04

11:59

1:34

6:42

4:21

1:05:15

12:25

2:50

5:22