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Why is the symbol for momentum in physics denoted by p, is it because all other letters are taken or that momentum starts with p in latin or what?

Question #22991. Asked by j.

??
Answer has 3 votes
Currently Best Answer
??

Answer has 3 votes.

Currently voted the best answer.
I always thought that the p you are referring is actually 'rho' in greek alphabet and i think it was choosen at random.

Oct 04 2002, 9:32 PM
Gnomon
Answer has 2 votes
Gnomon
23 year member
1331 replies

Answer has 2 votes.
Density is normal given by a rho but momentum is definitely a p, not a rho.

Oct 04 2002, 9:47 PM
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