
Why is momentum conserved?
Daniel and Kelly’s Extraordinary Universe
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Weedl Have a Dress Coat Law Herea
It is amazing that the universe can be described sets of physical laws that don't seem to change in time. It's just something we basically assume as one of the foundational principles of science. So if you've been dutifully getting your toxito dry cleaned before you listen to this pot ast, you can now just wear pajama pants. And you're also allowed to wear whatever you like when you're listening to this pot calf.
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