How big do you think it could be? 🤔?
What is the maximum size of velocity uncertainty in the universe?
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not greater than “1c”.
Really? I don’t even know what the physicist thinks right here, can you justify it? 🤔
in principle, no speed can be greater than the speed of light (c). Therefore, measurement uncertainty can never be greater than 1c. OK, this statement is trivial and does not really help.
The task you call in the commentary on gonzo’s question shows the decisive hint. The designation of the Plank’s action quantum h suggests that the task is to apply the Heisenberg’s blur relation.
https://de.wikipedia.org/wiki/Heisenbergsche_Unsch%C3%A4rferelation#Unsch%C3%A4rferelation_and_All-day experience
Here you will find the corresponding equations that you only have to change. As a blur, you take the width of the door. Then you can calculate the blur of the impulse, which is nothing else than the inaccuracy with which the (movement) energy can be measured. from this you can calculate the inaccuracy of speed measurement with mass (dein body weight)
Thank you. That was very helpful, really! So you could finally show me how you would expect it? Will make sure….