Curious555 Posted January 31, 2023 Report Share Posted January 31, 2023 (edited) Hi, The multiplication sign in p = m x v means that mass 'm' moves with velocity v. But... The multiplication sign in E = m x c^{2 does not mean that mass 'm' moves with speed C.} ^{I find it surprising. Can anyone help me quench my surprise and if possible give some more examples where 'multiplication' has such different meanings, with the terms in the equation being mass and speed/velocity.} Edited January 31, 2023 by Curious555 Quote Link to comment Share on other sites More sharing options...

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