What is terminal velocity?

We look at the terminal velocity of a falling object in a fluid (air in this case).
We look at how air resistance changes as the object falls and we will give the explicit formula for air resistance in the next #shorts video.
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[higherdimensions]

To make it more intuitive I would have drawn AR. Since it acts in the opposite direction to w we can subtract |Ar| from |w| and when |Ar| = |w| => a = 0