An object is placed at 0 on a number line. it moves 3 units to the right, then 4 units to the left, and then 6 units to the right. the displacement of the object is

Displacement of the object is 5 units to the right.

Explanation: Displacement is defined as the shortest distance between the initial position and final position. It is a vector quantity because it is described by the magnitude and direction both.

The initial position O of object is 0 units.

When it moves 3 units to the right, it is at +3 position on the number line.

When it moves 4 units to the left, It is at -1 position on the number line.

Then, when it moves 6 units to the right, it is at +5 position on the number line. This is the Final Position A.

Displacement is the distance between initial point O and Final point A = 5 units to the right.

Number line is shown in the image attached.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

wher is the rest of the question