Momentum and Impulse grade 12: Exam

[@mmspreadingthewordofgod6500]

Praise Jesus Christ for you mr Kevin, you truly are a blessing ✝️🥹🙌🏾. May Yahweh bless you abundantly ✝️🫶🏾

[@NhlamuloNana]

Anyone here before tomorrow's paper?🥹❤️

[@crispycrunch1029]

Real 😔✊

[@KgomotsoMokgadi-vc1et]

Here😢

[@rodricktandani3488]

😭😭🤚🏽 chaaaaiii

[@kabelotsoute1355]

Locked in😂😂

[@NhlamuloNana]

@@rodricktandani3488 You ready thou?😭😭

[@peitzu_art]

SIR I FELT LIKE LEGEND WHEN I CANCELED THE MASS (I tried doing the question by myself before u did ) Hehehe. Math is fun😂

[@kevinmathscience]

Haha :) Great feeling right?! Nice :)

[@makgetsithulare7968]

@@kevinmathscience what

[@WendyGqirhana]

​@@kevinmathscience my only question is how do we know that the final kinetic energy is greater than the initial kinetic how bruvva ?

[@tkthegamer9413]

Kevin is never wrong he is a God 😇💛Thanks man and God bless you 🙏🙌❤

[@kevinmathscience]

haha glad it was helpful!

[@Sunshyne409]

"*evil laughs* haha, get outta here masses" , Bro, I swear you are the best math teacher i have ever had ;-)

[@rumbidzai8689]

😂😂

[@KaylumDaniels]

Hey Mr.kevin is 3.4.1 not supposed to be final momentum, you changed the answer after rewriting it.

[@naledimabuya267]

Sir how did you find negative 6 (-6) for question 3.2

[@oneyy6165]

Kev da 🐐 no cap

[@claude7923]

I appreciate you! 🙏

[@kevinmathscience]

I am so happy this helps you!! :)

[@retha949]

Lol came across 3.14, had no idea what to do 😦this was the exact question they asked in trials I can’t believe

[@rethabilekopela4057]

Thank you very much 🥺

[@kevinmathscience]

You’re welcome 😊

[@yogiiofficiall]

KEVIN WHRE DID YOU LEARN MATH AND SCIENCE?You are gifted with this ? besides KZbin are a teacher

[@sammymojapelo]

How to find -6 on the graph 🙏🏻🙏🏻

[@soixishida]

Each block is 2 on the graph

[@maxjohnson2991]

Why if Pf initial momentum for 3.4.1????... isn't it final momentum

[@AD-hr4xf]

yes it is, he made a mistake when rewriting it i think

[@kevinmathscience]

Hello :) There is no mistake in the video. Please double check how I got the answer in 3.4.1. I also double checked.

[@AD-hr4xf]

@@kevinmathscience sir i double checked, at 14:20 you rewrote the answer as Initial Momentum but you had said the answer was Final momentum

[@kelseybrereton1696]

@@AD-hr4xf whats the answer then?

[@marckari2004]

@@kelseybrereton1696 the answer is final momentum bruv

[@nandisanzimande-vb5th]

hi sir. please explain how for question 3.2 VF's direction is east? is it cause we chose east as positive and the final answer was positive so therefore its east?

[@its.me.khanyo]

Yes👌 we took east as positive and since the final was positive it means it's going East!!

[@Lu10ic]

which question paper is this one

[@tshegotshegofatso5707]

M confused on how u got the -6 plis explain

[@kevinmathscience]

The collision is the part on the graph which is diagonal. The horizontal lines are the initial and final. So they tell us the graph is for P. So before the diagonal line, the velocity is positive 10 as seen on graph. After the diagonal line (so after the crash), the velocity is now -6 as seen on graph. So the final velocity of P would be -6. Hope that helps :)

[@Happycoder768]

​@@kevinmathscience how would you calculate to get to -6

[@kelseygovender3273]

Can you please explain how you got time from the graph?

[@kevinmathscience]

Hello Kelsey, I do explain this part at 11:17 in the video :)

[@ChrissTinah-bw2ty]

I also don't understand the how you got the 1.25 and 1.75

[@Mlisela]

@@ChrissTinah-bw2ty i dont know if im right / wrong bg u think since you have 4 square from 1 to 2 Say 2-1 divide by 4 ( the no. Of squares) = 0.25

[@ThozamaSonyelwa]

Hey Kevin I want to ask About this question 3.3 why are you saying Ek initial is bigger system?

[@fil724]

its an inelastic collison, so the joules are lost in Ek final, so the Ek inital is the bigger system

[@KhomotsoInnocentia-fn3ec]

Why does m-10 +m(-15) not =-10-15 when the masses cancels ?

[@mbalingcobo5795]

I am so confused as to how u read that -6 off the graph

[@kevinmathscience]

I hope you managed to figure that part out. Please rewatch that part a few more times :)

[@mimi-sq4oi]

i think that the the graphs intervals is in 2’s , 5 lines = 10 (each line is 2units) , so when you’re counting from the bottom it’s 3 lines x 2 . which is -6

[@emihleemza7862]

hey there I am more concerned on how you have obtained 1.75 and 1.25 I keep getting 1.8 and 1.2

[@salvationlesego678]

1 divided by 4 = 0.25 Therefore each line on the x-axis = 0.25... Understood?

[@kaitlynngovender8017]

​@@salvationlesego678 helped me..I was looking for this comment Thank you so muchhhh

[@PRSEIMELA]

​@@salvationlesego678 Meaning each block represent a 0.25 s ?

[@nnonorelebohilemolipa]

​@@PRSEIMELANo 1+0,25=1 ,25 1,25+0,25=1,5 1,5+0,25=1,75....and if you were to add the 0,25 to that 1,75 you were going to get the 2 on the graph...

[@girlcalledlex]

Hi Sir, why do we say EKfinal = EKinitial - 28,8 is it an elastic collision?

[@VuyolwethuKhaba]

It is not but for us to get equal magnitudes of the kinetic energy the initial kinetic energy must be decrease by 28,8

[@alexandermeyer8404]

we dont yet know what either Ek will be yet, but because the final Ek is 28.8J less (decreased) then it means that the final Ek is what ever the initial Ek was -28.8. so no, elastic would mean that Ekfinal is the same as Ekinitial

[@PRSEIMELA]

Can someone help me 😢how is Kevin reading this graphs😢

[@katlehotoolo947]

Mr Kevin I think you made a mistake on question 3.4.1.

[@kevinmathscience]

No it is correct. Checked memo as well to make sure! :) Was a weird question.

[@Luiis-0420]

Good morning science heads

[@mandisacapha5494]

Kevin I'm lost on why u cancelled the masses ...Plz elaborate

[@Mabotse.letlotlo]

Real

[@zee7718]

Mr Kevin, why do you cancel out the masses