00:01
Hello students, here we have a student who travels between two points a and b.
00:09
First of all, she stays at point a for some time t at rest.
00:16
Let's say this is time t1.
00:18
So at time t1, she is at rest at point a.
00:24
Then she travels slowly, slowly from a to b, say in time t2.
00:36
So we write it down in time t2, she travels from a to b slowly.
00:46
Now, after reaching b, she remains at rest at point b, say for time t3.
00:54
So we write it down.
00:57
T3 is rest at point b.
01:02
Now she travels back from b to a but now she travels fast from point b to a, say in time t4.
01:16
Thus t4 can be written as b to a and the motion is fast.
01:27
Now we start to draw the displacement versus time diagram.
01:33
We have until time t1 she was at rest.
01:39
So the displacement was zero...