timestamps

• 0:00

  Welcome and Introductions

• 0:40

  Stream Updates and Schedule

• 1:12

  Upcoming Q&A Sessions

• 1:44

  Energy and Momentum FRQs

• 2:15

  AP Test Format Changes

• 2:47

  Momentum Review Overview

• 3:17

  Defining Momentum

• 3:50

  Momentum as Mass in Motion

• 4:21

  Momentum Equation

• 4:53

  Momentum as Vector

• 5:25

  Changes in Momentum

• 5:57

  Impulse Equation

• 6:29

  Force-Time Graph Area

• 7:00

  Conservation of Momentum

• 8:06

  No External Forces

• 8:37

  Conservation Laws

• 9:08

  Newton's Third Law

• 9:39

  Types of Collisions

• 10:10

  Elastic Collisions

• 10:41

  Inelastic Collisions

• 11:12

  Kinetic Energy Loss

• 11:57

  Solving Momentum Problems

• 12:29

  Conservation Check Steps

• 12:59

  Expanding Momentum Equation

• 13:30

  Sample FRQ Introduction

• 14:02

  Elastic Collision Example

• 14:34

  Inelastic Collision Example

• 15:08

  Solving Elastic Case

• 15:38

  Before and After Momentum

• 16:08

  Momentum of Car and Truck

• 16:39

  Symbology and Directions

• 17:13

  Plugging in Numbers

• 17:45

  Truck Velocity Calculation

• 18:17

  Solving for Unknown

• 18:52

  Algebra and Result

• 19:23

  Inelastic Case Setup

• 19:55

  Sticking Together Momentum

• 20:26

  Combined Mass Equation

• 20:58

  Velocity Calculation

• 21:30

  Comparing Speeds

• 22:01

  Safer Collision Analysis

• 22:31

  Car Momentum Change

• 23:03

  Justification with Slides

• 23:33

  Elastic vs Inelastic Force

• 24:04

  Car Design for Safety

• 24:36

  Why Inelastic is Safer

• 25:07

  Questions on Example

• 25:40

  Momentum Question Types

• 26:13

  Graph-Based Questions

• 26:45

  Force-Time Graph Lab

• 27:16

  Units and Area

• 27:48

  Magnitude and Direction

• 28:21

  Impulse from Graph

• 28:52

  Area as Delta P

• 29:23

  Triangle Area Calculation

• 29:58

  Units Conversion

• 30:29

  Delta P Value

• 31:02

  Initial Momentum

• 31:43

  Conceptual Check

• 32:16

  Direction of Change

• 32:46

  Negative Delta P

• 33:17

  Final Velocity Equation

• 33:48

  Solving for Speed

• 34:20

  Direction Determination

• 34:50

  Mass of Second Cart

• 35:21

  Conservation Equation

• 35:54

  Algebra for Mass

• 36:26

  Equal Opposite Impulse

• 36:57

  Mass Calculation

• 37:29

  Graph and Momentum Summary

• 38:01

  Final Question Setup

• 38:32

  Bumper Cars Scenario

• 39:03

  Total Time Calculation

• 39:34

  Kinematics Equations

• 40:06

  Acceleration Time

• 40:39

  Distance During Acceleration

• 41:10

  Time to Speed Up

• 41:42

  Acceleration Duration

• 42:16

  Remaining Distance

• 42:46

  Distance Calculation

• 43:18

  Constant Velocity Time

• 43:53

  Total Time Result

• 44:24

  Kinematics Review Note

• 44:56

  Part B Speed Calculation

• 45:26

  Momentum Before After

• 45:58

  Car Masses and Velocities

• 46:29

  Separate Objects After

• 46:59

  Equation Setup

• 47:34

  Number Crunching

• 48:09

  Speed Result

• 48:40

  Direction Analysis

• 49:11

  Elastic Check

• 49:42

  Kinetic Energy Before

• 50:13

  Kinetic Energy After

• 50:46

  Energy Calculation

• 51:21

  Not Elastic Justification

• 51:55

  Open Q&A Session

• 52:55

  Topic Suggestions

• 53:27

  Future Stream Plans

• 53:57

  Merged Stream Ideas

• 54:31

  Class Progress Check

• 55:02

  Upcoming Topics Review

• 55:32

  Closing and Thanks