Conservation of Momentum

The law of conservation of momentum is explained qualitatively and mathematically through examples involving billiards and roller skaters.

Segment 4B: Conservation of Momentum The law of conservation of momentum is explained qualitatively and mathematically through examples involving billiards and roller skaters.

Premiere Date: July 24, 2018 | Runtime: 00:09:33

## Learning Objectives

-Define the law of conservation of momentum.

-Differentiate between open and closed systems.

-Show how Newton’s 3rd Law of Motion and the impulse objects in a collision exert on each other lead to momentum being conserved in a closed, isolated system.

## Vocabulary

closed system - matter does not enter or leave a system, and no net outside forces act on the system.

law of conservation of momentum - in a closed and isolated system, the total momentum of objects in the system before a collision is equal to the total momentum in the system after the collision.

momentum (p) - the quantity of motion of an object or, mass in motion; it is calculated by multiplying the mass of an object by the velocity of an object.

## Georgia Standards of Excellence

SP3Obtain, evaluate, and communicate information about the importance of conservation laws for mechanical energy and linear momentum in predicting the behavior of physical systems.

SP3.aAsk questions to compare and contrast open and closed systems.

SP3.dConstruct an argument supported by evidence of the use of the principle of conservation of momentum to • explain how the brief application of a force creates an impulse. • describe and perform calculations involving one dimensional momentum. • connect the concepts of Newton’s 3rd law and impulse. • experimentally compare and contrast inelastic and elastic collisions.

## Request Teacher Toolkit

The Physics in Motion teacher toolkit provides instructions and answer keys for study questions, practice problems, labs for all seven units of study.  GPB offers the teacher toolkit at no cost to Georgia educators. It will be available in September 2018. To preorder your teacher toolkit, complete and submit this form to request the teacher toolkit. You only need to submit this form one time to get materials for all seven units of study.