This video was super helpful! Honestly baffles me that i can learn more in a video the length of one period in my physics class than actually sitting in my physics class with my teacher explaining lol.

@zhelyo_physics

2 жыл бұрын

Thanks a lot for the kind words! Glad this is helpful!

This was a very helpful video. Thank you for all the effort you put into all your videos. I really appreciate that 🙏

@zhelyo_physics

2 жыл бұрын

Thanks for the kind words! Good luck revising!

your tone is perfect.... i have a background study sounds and this vid played and im lovin it

@zhelyo_physics

Жыл бұрын

Thanks a lot for the comment! Much appreciated!

Brilliant video bro. Mocks tommorow and this is just what I needed

@zhelyo_physics

2 жыл бұрын

Glad I could help!

Best physics channel on this platform 100%

@zhelyo_physics

10 ай бұрын

wow thank you so much for the amazing comment!

exam tomorrow and i've been studying with your videos for the past two weeks so i have some high expectations

@zhelyo_physics

Жыл бұрын

Good luck tomorrow! : ) You got this!

@coast1501

4 ай бұрын

how did it go

@iris5212

Ай бұрын

A year later so how did it go

thank you for this helpful video 💕

@zhelyo_physics

7 ай бұрын

anytime! thanks for the comment!

22:00

Can you please make a video on negative graphs for vector quantities like acceleration and velocity.

@zhelyo_physics

2 ай бұрын

Interesting! What exactly do you mean by negative graphs? Thank you for the comment and idea.

@neptune4434

2 ай бұрын

@@zhelyo_physics like ball bouncing velocity time graph the line goes below zero .Its hard to understand(for me) they are in past paper questions like m/j 15/p22/q2

thanks man!

@zhelyo_physics

Ай бұрын

Anytime!

extremely helpful videos.Best Sir

@zhelyo_physics

7 ай бұрын

Thank you very much for the comment!

My one is IAL edexcel board, I think it's pretty much the same topics. Mechanics, materials, waves and particle nature of light, and electrical circuits. 4 topics in that order

@zhelyo_physics

Жыл бұрын

they are extremely similar! Good luck and leave a comment under a topic video if something doesn't make sense!

@shahanislam1364

Жыл бұрын

@@zhelyo_physics thank you 😊. Will do

sir how do you recommend remembering concepts and practicals for my a level next week? love the vids!

@zhelyo_physics

Жыл бұрын

my playlist : ) kzread.info/head/PLSygKZqfTjPDgdq6nvUV29YBSsAuPisBp

@luddy20

Жыл бұрын

@@zhelyo_physics THANKS SIR

Hi, very useful video, your technique of teaching is so beneficial. just a quick question , are vectors included in the 'motion' topic. I have an exam on= Mechanics (Motion; Projectiles; Dynamics; Statics; Moments) and would i need to revise vectors - adding subtracting etc?

@zhelyo_physics

Жыл бұрын

I would, even if it's not formally part of the section, adding, subtracting vectors is pretty crucial for this. Good luck!! : )

hi sir i check your practice questions playlist but i was wondering if you could do one for ocr a 3.1 motion. If it isn't too much for you.

@zhelyo_physics

Жыл бұрын

Sure! Thanks a lot!

Great explanation Sir... Thank you very Much... Is it clears all of the CIE motion syllabus??

@zhelyo_physics

Жыл бұрын

Most of it however please check with a printed syllabus to use a check list. Good luck revising! : )

I love you , u are brilliant!!!!!!!!!!!!

@zhelyo_physics

6 ай бұрын

Thank you so much for the kind comment!

21:26 if we square -5, we get 25, meaning then the negative signs don't cancel out. correct me if i am wrong.

@imogenlynch7027

Ай бұрын

Yes, but it is -(u)² so it would be -(5)²=-25

Hi, at 27:25 can you just use one light gate at the bottom and say that the initial velocity is 0?

@zhelyo_physics

Жыл бұрын

Yep!

Great video!, but can I know which ones are the AS ones please?

@zhelyo_physics

Жыл бұрын

Sure - this playlist up to Quantum Physics, the rest is A2 (if you do OCR A, if you do a different exam board, check with the specification). kzread.info/head/PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR

@rashed831

Жыл бұрын

@@zhelyo_physics Your the best!, my board is CIE!!

@zhelyo_physics

Жыл бұрын

Thanks a lot for the comment! Definitely check with the syllabus beforehand to ensure they cover everything. If not drop a comment if something is missing.

@rashed831

Жыл бұрын

@@zhelyo_physics I just checked and everything is covered, I really appreciate it!!!

Hi sir all your a level physics revision videos are OCR A spec right ?

@zhelyo_physics

Жыл бұрын

Hello, yes, however the content is very similar across the exam boards with the exception of the AQA options which I will be filming this year.

A student standing on the platform at a railway station notices that the first two carriages of an arriving train pass her in 2seconds and the next two in 2.4sec. The train is decelerating uniformly. Each carriage is 20metres long. When the train stops, the student is opposite the last carriage. How many carriages are there in the train? How do i solve it?

@zhelyo_physics

Жыл бұрын

so, I'd find the average velocity of the two instances and calculate the acceleration. Then assume the average velocity to occur at the middle of each passing as acceleration is constant, i.e. vaverage happens at t=1s and then at t=2+1.2 seconds. Then use v=ut and then s=ut+1/2at^2 to find the total distance and divide by the carriages. Good luck!

at 37:40 why is acceleration negative and why is displacement positive if the car isn't at the original position?

@zhelyo_physics

Жыл бұрын

as the car is decelerating and they are in opposite direction. Hope this helps!

Normally the independent variable is on the X axis so why is it in the experiment to determine g is h on the y axis when that is what we are varying

@zhelyo_physics

2 ай бұрын

as long as the gradient is consistent it doesn't really matter for a level physics unless the questions specifies exactly the graph

@sean2848

2 ай бұрын

@@zhelyo_physics ok thank you

Are all ur vids only for AQA or all exam boards? Because I am doing OCR so I’m not sure if is suitable for me, please reply thanks

@zhelyo_physics

9 ай бұрын

Hi I teach OCR, to create those videos I actually followed the OCR specification. For AQA I added a few extra videos for some specific parts and I have labelled them. Generally, all exam boards are extremely similar so suitable to all.

is this playlist suitable for syllabus GCSE AS Level

@zhelyo_physics

6 ай бұрын

you mean GCE AS Level right? If so, yes.

Nice

@zhelyo_physics

5 ай бұрын

Glad this is helpful!

is this whole playlist of AS Level or A2. Please answer

@zhelyo_physics

6 ай бұрын

Hi this is for both, about the first half of it is for AS and the whole for A2. Always worth looking at the syllabus/specification to see which exact topics are for AS/A2

also which videos are for AQA? I know most of your videos are targeted to OCR students

@zhelyo_physics

Жыл бұрын

the spec covered is almost identical except for the options and particle physics, I have separate videos for this at the end of my a level physics revision playlist. Hope this helps!

my teacher says it is -9.81 regardless of which direction it goes why do you have conditions for your +/- gravity .

@zhelyo_physics

Жыл бұрын

It is 9.81. Sometimes in calculations it is convenient to take the downward direction (gravity) to be negative if something is going upwards. You can do it the other way though and keep acceleration positive but then velocity/displacement or whatever else you are calculating would be negative. Hope this helps!

W video

In fact the value of g is always negative because it always in the direction of negative y-axis, I.e. always downwards!!!

@zhelyo_physics

Жыл бұрын

Nope, we can take positive or negative to be any direction in physics, as long as it's consistent it actually doesn't matter. In A Level, we take it so that it's negative if the object is slowing down i.e. negative acceleration. Hope this helps!

Will alevel physics ever ask you to define Displacement (OCR)

@zhelyo_physics

2 жыл бұрын

they could, anything that's on the spec we may be asked to define.

Sir I am from Pakistan And doing As level right now Does this video cover the whole kinematics chapter of physics I will be giving CIES next year

@zhelyo_physics

9 ай бұрын

It should do yes, but please double check your syllabus and using it as a check list. This way you will also be confident in your own learning.

@Pro5tar27

9 ай бұрын

@@zhelyo_physics Ok Sir

nice video, comment from china

@zhelyo_physics

Жыл бұрын

thank you so much for the comment! : ) All the best!

They don't usually ask questions to show the derivations of the equations, right?

@zhelyo_physics

Жыл бұрын

They do, those two derivations of energies are actually on the spec and have appeared a few times. In other modules things like Kepler's third law, escape velocity, etc appear all the time. Hope this helps!

@Bulldog01234

Жыл бұрын

@@zhelyo_physics oh! I'm actually doing CAIE. I wrote as-level physics in may/June 2022 and I've solved some past papers I didn't see any questions about the derivations. I will be writing AS and A-level again this May/June. I will study the derivations Just in case. I love your videos they are accommodating, thank you!

@zhelyo_physics

Жыл бұрын

Thank you for the nice comment! I have just looked at your syllabus: www.cambridgeinternational.org/Images/554625-2022-2024-syllabus.pdf See page 19, both derivations are on there, so I'd make sure you cover them.

@Bulldog01234

Жыл бұрын

@@zhelyo_physics I guess I must've missed that when I saw the syllabus sheet. Thank you, very much for checking it out I really appreciate it. Once again Your videos are really really helpful.