Question

Explain why it is important to identify a reference point for any description of motion.

Answer 1

n the particular case of motion, a reference point is a stationary point in space. You can then measure the displacement of objects in space from this point. 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.

Answer 2

A reference is critical because it determines how much motion has occurred. You can't determine how much an objected has moved if you don't know where it came from.