If I know a bump is coming while I’m driving and I hold my cup up high it doesn’t spill. But if I leave it in the cup holder or even hold it around my stomach area, it will spill. I know it’s a physics thing but I never took physics. What causes this?
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It’s not the height AFAIK. It’s likely you’re holding it too tightly when it’s closer to your body, which restricts the movement of the cup but not the liquid inside. Basically you want the cup to move with the movement of the vehicle, because that’s what the liquid is doing, but the movement of the liquid is slower than the speed of the vehicle
Edited for clarity
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