Gauteng 2021 Prelim Made Easy with Work Energy and Power Hacks

[@paballomamabolo5882]

Seeing how easy these questions actually are gives me confidence. Let's ace it Class of 2021

[@MlungisiNkosi]

Loving the confidence

[@TshamisCorner]

Finals tomorrow 🤝 thank you sir for the preparation!!! ❤️‍🔥

[@MlungisiNkosi]

My pleasure...

[@mildredagu8028]

Hello sir For the last question how do you know that the velocity at point B at the top is zero? when it was not stated that it's at rest or released in the question

[@MlungisiNkosi]

They said it reaches a maximum height… And that means it stops at maximum height

[@mildredagu8028]

@@MlungisiNkosi Oh thank you so much sir

[@tpskiiiiiiii]

Great content bro been here since term 2 and large improvement 🌞🏂

[@MlungisiNkosi]

Thank you so much

[@xolanfana5373]

3:38 "Define a constant horizontal force" got me laughing out loud ngabuye ngakhumbula ukuthi kombe sengzobhala😭😭😭 i need to focus

[@rickasinghbhoola8719]

Sir, should that force of inertia not be shown in calculations opposite the frictional force since the trolley does move up the incline? I would want to calculate Wi+Wfk=^Ek+^Ep

[@MlungisiNkosi]

No… it shouldn’t be shown

[@logansubramoney1411]

Hi sir When we used the frictional force, why do we also use the displacement x cos?

[@MlungisiNkosi]

That is work done against friction

[@rickasinghbhoola8719]

Gauteng 2021 exam paper says force is removed. How does trolley then move up the incline if force is removed? I feel an applied force should have been added opposite to frictional force. Thanks

[@MlungisiNkosi]

Remember it’s possible for something to keep moving even when a force is removed… That’s inertia.

[@rickasinghbhoola8719]

Should that force of inertia not be shown in calculations opposite the frictional force since the trolley does move up the incline? I would want to calculate Wi + Wfk=^Ek+^Ep

[@calvinbafshoe2626]

Gauteng Paper was quite easy and it didn't have a lot of diagrams I wonder why. Mpumalanga had a kinda very high standard when I compare to other provinces.

[@MlungisiNkosi]

I will look at Mpumalanga after treating Chemistry

[@roshaanghani1709]

sir why can't you use the nc eq fr 5.4.1

[@MlungisiNkosi]

You absolutely can

[@latoyasocishe]

For 5.4.1 aren't we supposed to use MEbefore =MEafter because it tells us there's no friction,I'm so confused now

[@marcasu]

The thing is they gave you the friction in the question When u use the mechanical formula itll be wrong bc i doesn't accommodate forces like Friction or force applied It only accommodates gravitational force in potential energy Hope this helps !

[@flexace768]

After watching 3 parts of this section this was easy to answer thank you

[@MlungisiNkosi]

You’re welcome

[@Nobars-z1q]

Tjo tjo tjo😔 I could have easily gotten a 90% for this whole test, if only I understood the work yaz,but now I do thanks to you sir.

[@MlungisiNkosi]

Final exam will know who you are...

[@Nobars-z1q]

Oh yes sir, 💪💪💪

[@zoliswa_nqobile]

You made a mistake on 0-1/2(2)(4.9)² the answer is -24,01 I don't know if maybe you rounded it off or..

[@MlungisiNkosi]

Thank you

[@roritoocute]

please do the north west prelim 2021 question on work energy and power, please sir!!🙏

[@MlungisiNkosi]

Please send an electronic copy

[@Xworldwide]

[@MlungisiNkosi]

Thank you 😊

[@maokotokulogo866]

Helpful

[@dom..8023]

❤️❤️🙏🏾Please also do Mpumalanga 2021 prelim

[@MlungisiNkosi]

I think I received that one... I will

[@dom..8023]

@@MlungisiNkosi Thank you❤️much appreciated🙏🏾

[@kagisot5479]

you doing this memos it's all depressing to me right now.

[@MlungisiNkosi]

You're missing the point... The purpose is to help you diagnose how much you know in that section. If you realise that you still are struggling, go to the videos I've already made on the same topic. Please use this time very wisely and you'll do much better for your finals. All of God's best for your preparations.

[@g233tube9]

Helpful

[@MlungisiNkosi]

You’re welcome