How does roblox calculate the velocity of a part?

Hi, I’m currently trying to make a spacecraft but because of how confusing roblox physics engine is, I desided to handle as much physics as posible in my own script.

But I still wanted to use what roblox physics engine use to determin the velocity of a part/model, but I coulden’t find anyone talking about it.

Thank you for your time.

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Through their physics engine

I mean you can read about the math behind physics systems if you want but I’m not sure I understand your question or goal?

If you mean what velocity is derived from it is simply distance divided by time, if a part is to move 10 studs over 2 seconds it has a velocity of 5 studs/second