use protractor CS 9 units 553.9 8 7 units T=50.0 ms Sunits move for resultant 539.4 g around 65% 14Physics 30 Unit A: Momentum & Impulse Lab 1: Conservation of Momentum (1-2hrs) The dot sheet tracks the actual positions of the air pucks over time and, therefore, allows us to determine the velocity and, thereby, the momentum of each mass before and after the collision. Unlike most of the problems you practice, the main purpose of this lab is to compare p, and the p, of the collision (by using percent difference): not to find a missing momentum. You have to determine the p, by adding ( vector addition) the two final momentae. In theory, the Law of Conservation of Momentum states that p, and the p, should be equal, but in reality the system may not be perfectly isolated and therefore the percent difference will not be zero - although it should still be