Question

with the example show that displacement can be zero,positive ,negatives?

Answer 1

A-------------------›B
A‹-------------------B
Suppose you start your journey from point A and return back to point A then displacement is zero.
A--------------------›B
Suppose you start from point A and stop at point B displacement is positive.
C--------A-----------›B
C‹--------A------------B
The diagram given above gives negative displacement. You started journey from A, reached B and then went back in the opposite direction to C.
Thanks.
Hope this helps you.