PHYS 121 Lecture Notes - Lecture 9: In C
Document Summary
All diagrams taken from "l09_momentum. pdf" on the course canvas website. Momentum: rewriting the equation for inertia, defining momentum to be p = mv, an object with a high momentum will cause a bigger change in momentum, determines what will happen in a collision. It is an extensive property of the system. If a system is isolated, collisions / interactions occur only between objects within the system, and the momentum of the system does not change: In a non-isolated system, the total momentum can change. The transfer of momentum between the system and the environment is called the impulse. Quiz: identify all of the following where the system is isolated: puck slows to a halt. System: puck: cart moves at constant velocity. System cart: standard cart collides with cart of unknown inertia: system standard cart, standard cart collides with cart of unknown inertia: system both carts, cart moving at constant velocity is then given a push: system cart.
