Find the common unit of velocity
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What is the unit of velocity?
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26 Answers

Bryan Leist, B.S. Mechatronic Engineering & Laser Physics, California State University, Chico (2017)
Answered May 16, 2019
Velocity is the change of position over time. It includes a distance, a direction vector, and a period of time. The vector means you need a different number for each dimension of movement multiplied or tied to a dimension unit vector. 3d space typically uses x/y/z or i/j/k. If you represent it graphically somehow, its common to use the total speed/hypotenuse and just put a little arrow over it. Without the direction, its just speed.
The exact units depend on the application. Typically scientists and engineers use meters per second. You're probably more familiar with miles or kilometers per hour. Rocket science might use kilometers per second, and geology might use millimeters per year.
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