Sagot :
Answer:
An object is in motion if its position changes relative to another object. To decide if you are moving, you can use your chair as a reference point. A reference point is a place or object used for comparison to determine if something is in motion.
Explanation:
Hope it helps
A reference point is important in determining motion because in order to say that something is moving, you need to have something stationary to compare it to.
Hope this helps.