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This 4 page Study Guide was uploaded by Azaleah davis on Wednesday October 14, 2015. The Study Guide belongs to Physics 111 at West Virginia University taught by Paul Miller in Summer 2015. Since its upload, it has received 55 views. For similar materials see Physics 1 in Physics 2 at West Virginia University.
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Date Created: 10/14/15
Momentum Impulse amp Collisions Wednesday October 14 2015 944 PM When dealing with some questions in this chapter we are dealing with forces in situations that we do not know much about such as collisions At the same time it isn39t very important to what we are actually trying to nd Two main concepts in this chapter include Momentum amp Impulse Momentum and lmpulg Newton39s 2nd Law can be rewritten in terms of Momentum 0 V I iii 3 I chnstde mg a particle ct ccnsta t mass m SIHEE r STE Newt311139s 2nd law can a h be reenttten as 6H a Zmd MTmF O V The cult fcrces acting a particle equals the peeduct cf the mass vetecitjr cf the particle er the mamastsm tissue mamastsm The synttncll represents I mementum 1 V 0 Keep in mind Momentum is a Vector quantity 0 An increase in a particles massvelocity increases the magnitude of its momentum Momentum always points in the same direction as the velocity Momentum is usually expressed in vectors 0 The sum of the net forces equals the rate of change of momentum Impulse Momentum Theorem 0 Momentum and Kinetic Energy both depend on the mass and velocity of a particle EXCEPT momentum is a vector proportional to speed while kinetic energy is a scalar proportional to velocity squared 0 To understand this more consider Impulse which is the product of the net force acted on the particle during a time interval The Net Force is Constant 73 9 it I f39 o Impulse Remember o It is a vector quantity lts direction is in the same direction as the net force 0 if the sum ef ferees equals the change in momentum p3 331 then impulse 39 can be rewritten E13 0 The change in momentum of a particle equals the impulse of the net force that acts on the particle during the time interval Momentum and Kinetic Energy Compared o The Impulse Momentum Theorem States 0 Changes in a particles momentum are due to impulse depending on the time over which the net force acts Momentum equals the impulse that accelerates a particle from rest to its present speed httpsstudvsoupcomwestvirqiniauniversitvphvsicsl11studvquideexam2 id61195 From lthtt s stud sou com market lace newgt
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