A boy starts from point A and moves 5 units toward the east, then turns back and moves 3 units toward the west. what is the displacement in the position of the body?

5-3=2 units

To find the displacement of the body, we need to determine the net distance and direction traveled from the initial position.

In this case, the boy starts from point A and moves 5 units eastward. So, we can represent this as a displacement of +5 units in the positive x-direction (since east is usually considered positive).

Next, the boy turns back and moves 3 units toward the west. This can be represented as a displacement of -3 units in the negative x-direction (west is usually considered negative).

To find the net displacement, we need to add the individual displacements:

+5 units (eastward) + (-3) units (westward) = 5 - 3 = +2 units

Therefore, the net displacement of the boy's position is 2 units toward the east.