AP Physics 1 review of Momentum and Impulse | Physics | Khan Academy

In this video David quickly reviews the momentum and impulse topics on the AP Physics 1 exam and solves an example problem for each concept. Created by David SantoPietro.
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[@FreePalestine12341]

At 5:40, you solved for momentum, but it asks to solve for velocity. -40kg*m/s needs to be divided by the 2kg that the rocket weighs. that'll give you the answer -20m/s.

[@PamKitsuwan]

Thanks for saying this. :)

[@rjk368]

I agree - I was very confused because I did it multiple ways and got -20 m/s until I realized this! Also, I think that the video would have been much more helpful if the answers weren't shown straight away, giving us a chance to solve for the answer and then check as he does the work.

[@prachisharma8076]

Thanks for pointing this out! I should thank you for this!

[@iqarchnet6517]

I was about to go down to the comment section and say this but you said it for me thanks!

[@saicharanmandadi8531]

Yea I noticed that too

[@MrGnome-ng6jv]

good luck tomorrow bros

[@MadeByIsmael]

I wish you all good luck guys! Im just aiming for a 4

[@ieatgrass108]

Nah you gotta aim for a 5

[@Dunger974]

Did u get a 4?

[@dandk6168]

How's life man, did you get that 4?

[@pingpong293]

WHO ELSE IS BINGING ALL THESE VIDS FOR TOMORROWS EXAM!!!!!

[@WaddleDeeKnows]

Ykwtfgo it’s 4 SZN 😈

[@MN-wi1pr]

how'd it go

[@wastingtimejustwaiting]

I have it today in 12 minutes, I hate myself 😐

[@mysteryplayer4723]

@@wastingtimejustwaiting how much did u get bro

[@aki_477]

HERE IN 2024 IM TAKING THE EXAM IN 33 HOURS WIS ME LUCK

[@meghananadella1570]

At 10:12 your answer choices should be vx and vy, instead you only have vx values. But great video overall, thank you!

[@MTNguyen1999]

Thank you for helping me to understand the chapter deeply

[@AwesomRandomVids]

Very helpful, thank you!

[@sorangelr]

For the Elastic and Inelastic problems, the explanation makes sense but the calculations indicate that kinetic energy is conserved. I'm confused. Based on my calculations, KE = 2MV^2 before and after collision.

[@samarthk4130]

KE before for mass m is positive 18, not negative, because you're squaring the negative 6 to make it positive

[@BillPark-ey6ih]

thank you. You saved me from test that happens next hours. Wish me luck :)))

[@sujaysyal]

Literally a lifesaver

[@beans4392]

Nice video 👍

[@chineduejeh8948]

Thanks for the review, very effective!

[@sushinuggeto8262]

Love this guy

[@maxmustermann3925]

Nice, good stuff!

[@omislam9164]

معلومات مفيده مهمه 👍💐💐👏

[@baguette9669]

5:53

[@sangeetanagar2489]

These questions are from MIT workbook

[@nefiseiremgulduren8512]

These questions are easy

[@themcairplane]

Yeet!

[@Dani-lx6bp]

ily

[@rohanmani7741]

.