Recent content by Mrs. Callahan

  1. Mrs. Callahan

    Why Is "P" Used in Momentum Formula (p=mv)?

    While teaching momentum, we use the formula p=mv. Every year it comes up as to why the letter p is used in the formula and not other letters or symbols. I have conducted on-line searches and I stumble across explanations that mention Newton and his Principia along with other possible...
  2. Mrs. Callahan

    Expanding Your Physics Knowledge: Joining the PF Community

    Hello! New to PF -- my physics knowledge is elementary -- I know enough to teach 8th Grade (usually). I'm hopping on to the forum to expand my knowledge base.
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