How are vectors useful in describing motion?

<p>Vectors are necessary because motion in a plane (two dimensions) or space (three dimensions) involves physical quantities, including velocity and acceleration. Both of these have both magnitude and direction. That helps us know how objects move in the real-world and in any real space. In one-dimensional motion, we only can know two directions, and show it as signs (+/-), and not more than that.&nbsp; Motion in a plane requires vectors to accurately represent these directional aspects.</p>

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