What is meant by momentum? Momentum is the quantity of motion .Any thing in the universe is characterized by the quantity associated with it. In motion both mass and velocity contribute to its quantity. Momentum is the product of mass and velocity. Share with FriendsTweetMoreShare on TumblrEmailPrintPocketRelatedDefine Momentum30 Aug 2011How to describe momentum physically ?25 Jul 2011Class IX Physics :: Question Bank on Force and Laws of Motion23 May 2011No related posts.