Make a Claim as to whether momentum is conserved or not conserved . Identify the Evidence that provides support for your claim ; refer to specific sets of values in each data table that serve as credible evidence . Write a paragraph or more of sound Reasoning to argue why the evidence logically lead to the claim you are making. Write well. Write logically. Write thoroughly. Use a separate page of paper if necessary. Elastic Collisions Purpose : To gather evidence that can be used to support a claim that total system momentum is or is not conserved in an elastic collision . Background: The objects involved in a collision are often considered as a system . Provided that the system of two objects is not experiencing a net external impulse , there would be no change in momentum of the system . If one object within the system loses momentum , it is gained by the other object within the system . The combined momentum of both objects would be conserved