and pathlines kinematics math

17:15

کوتاه

4:36

9:43

کوتاه

کوتاه

12:20

1:46

5:35

19:49

29:23

20:30

6:58

9:03

2:56

5:10

2:00

1:48

36:10

22:45

26:21

29:42

37:38

45:37

35:00

39:08

30:51

39:36

34:09

9:38

9:51

41:09

7:16

17:05

27:00

19:53

16:32

30:41

37:11

2:12