An arrow is used to indicate direction. It is used to indicate the direction toward a place such as a city or a restroom. An arrow is also used as a signage on one-way streets to indicate the direction that vehicles should drive.
"indictor" = Someone who accuses someone else of wrong doing. Are you sure you did not mean "inductor" or "indicator", "indictor" is not really used.
education
Its pH and if a solution is an acid or base.
No such model
Universal Indictor to test if it is an alkaline solution
The distance and direction between starting and stopping positions is displacement.
That depends on where you are starting out from.
Displacement includes the distance between the starting and ending points and the direction in which you travel.
b
it is starting with a...
Forward,
Displacement.