College Physics - Core Concept Cheat Sheet 08: Momentum and Collisions Key Physics Terms Conservation of Momentum in 2D • Vector: A quantity that represents magnitude (size) and direction. It is usually represented with an arrow to indicate the direction; arrow may be drawn to scale. • Vector Component: The perpendicular parts into which a vector can be separated and that act in different directions from the vector. • Resultant: The result of adding two or more vectors; vector sum. • Vector Addition : The process of combining vectors; added tip to tail. • Force : A vector quantity that tends to accelerate an object; a push or a pull. A Ball a strikes A B motionless ball B. After the collision they move off as B shown. Note how momentum is conserved. In the x-direction, the momenta add up to the original momentum before the collision. In the y-direction, the momenta cancel out since there was no
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This note was uploaded on 03/16/2011 for the course PHYS 1 taught by Professor Landen during the Winter '11 term at Macomb Community College.