Impacts and linear momentum

[meech-ward]

Learning Material

• Khan Academy
• Crash Course
• Physics Classroom

Ted Ed

• Conservation of Momentum
• 2D impacts
• How to use the shortcut for solving elastic collisions
• Center of Mass

Cool Stuff

Interactive physics class room http://www.physicsclassroom.com/Physics-Interactives/Momentum-and-Collisions

Distributed Practice

• Varsity Tutors

Distributed Practice questions answered correctly:

• [x] 1 Conservation of Momentum
• [x] 2 2D impacts
• [x] 3 Varsity #1
• [x] 4 Varsity page2 #1
• [x] 5 Khan

Extra:

Got this wrong: Example question #32

• [x] Complete Khan scill check https://www.khanacademy.org/science/physics/linear-momentum/skill-check-for-impacts-and-linear-momentum/e/impacts-and-linear-momentum-skill-check

Quiz

• [x] Varsity Tutors

Sections

• Impulse and momentum Khan Varsity
• Elastic and inelastic collisions Khan
• Center of mass Khan

Notes

• Collisions, Elastic & Inelastic
• Momentum and Impulse
• Force vs Time Graph
• Elastic collision

[meech-ward]

Today I watched the crash course video. Next time I will start the Khan academy stuff.

[meech-ward]

Today I spent about 2 hours on Impacts and linear momentum video & notes. I also created 2 lessons on Ted Ed for a couple of the videos I watched.

Next time: https://www.khanacademy.org/science/physics/linear-momentum/momentum-tutorial/a/what-are-two-dimensional-collisions

[meech-ward]

I Spent about 1:50 on this topic.

I was having trouble in the end understanding the math involved with the collisions and conservation of Kinetic energy and momentum. Next time I'll pick up where I left off with the reading and answering questions: https://www.khanacademy.org/science/physics/linear-momentum/elastic-and-inelastic-collisions/a/what-are-elastic-and-inelastic-collisions

[meech-ward]

Today I spent about 40 minutes on elastic collisions. Next time https://www.khanacademy.org/science/physics/linear-momentum/elastic-and-inelastic-collisions/v/deriving-the-shortcut-to-solve-elastic-collision-problems

[meech-ward]

I spent just under 2 hours on collisions and centre of mass. Next time i'll finish the section with reference frame https://www.khanacademy.org/science/physics/linear-momentum/center-of-mass/a/what-is-center-of-mass

[meech-ward]

Today I completed the quiz. I got all the questions correct exept for question 5. I think there's an issue with Question 5 though. I think someone messed up the second step in the solution:

[meech-ward]

I did the first two questions from Khan Skill check https://www.khanacademy.org/science/physics/linear-momentum/skill-check-for-impacts-and-linear-momentum/e/impacts-and-linear-momentum-skill-check

I had to re familiarize myself with conservation of momentum and how kinetic energy is conserved in an elastic collision.