Question

How would you use the ruler to measure the distance an object has moved?

Answer 1

You must place the ruler between the two centers for a good measure of the distance between the objects.

Step-by-step explanation:

Answer 2

You can use a ruler to do that by using the numbers it has on the sides of it; you put the 0 inch part of the ruler on top of the place on where the object started and see how many inches it moved from the 0 mark to where it is right now.