Doubts in momentum

  1. A body with mass 'm' moves with velocity 'v' possess momentum and the magnitude of momentum of the particle is given by product of its mass and its velocity
    Who came up with this idea? On what observation leads to think him like this?
    I know that Newton's 2nd law states that force is nothing but rate of change of momentum. So this idea (i.e, concept of momentum) dates back before Newton proposed his laws right, or am i wrong?
     
  2. jcsd
  3. ehild

    ehild 11,793
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    It is the definition of momentum.
    Newton called it quantity of motion
    http://en.wikisource.org/wiki/The_M...of_Natural_Philosophy_(1729)/Definitions#Def1
    He formulated his second law as

    http://en.wikisource.org/wiki/The_Mathematical_Principles_of_Natural_Philosophy_(1729)

    His Principles was based on the experimental observations of Galilei and others.

    ehild
     
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