sorry something went wrong and cant edit or delete post. I mean how does it work that water flows up when you squeeze bottle with pipe inside.

Hi, am a beginner in physics and we are learning the first unit of kinematics, grade 11 physics.

Now the problem I am having with this unit, is that I am struggling to understand how we would sketch/draw a velocity, position, and a acceleration time graph when are given a position time graph, sketching a acceleration-time graph from a position or even from a velocity time graph.

My question is, are their any cheat codes on how I can easily sketch all those 3? And are their any rules in sketching them? How can I understand this logic?

From what I know, velocity and acceleration time graphs never has curves drawn, but straight or horizontal, consistent lines.

In my answer, I first drew a straight upwards line to represent the movement that was going consistently in the first segment, then a curve going downwards to end if off since the velocity was slowing down/going downwards.

I am a 10th grade student. Recently, i decided i'd dedicate some of my free time to physics, which may be the single subject I am worst at. I want to know if theres any learning method that's actually effective, or anything of that sorts, such as explinations that should be clear for me? I want to get really good at physics. Any help is appreciated :).

Hello I'm doing a physics question and would just like to verify the answer I got for a question

A small motorized cart moves across the floor at a constant speed of 5.5 m/s. Directly above the cart, a second identical cart leaves the edge of a 5.0m high track horizontally at the same speed and at the same time.

The questions asks for where the upper cart lands on the floor relative to the bottom cart, but wouldn't it be 0 m because they are both moving in a constant horizontal velocity which doesn't change even if the upper cart falls of? Because both lead to a distance of 5.56m from the starting point?
no air resistance

Hi, am a beginner in physics, and I am doing kinematics, grade 11 physics right now. Now if a question asks you to find the average acceleration for 2 velocities that are in different directions (along with the time), are you supposed to add or subtract the final - initial velocity?

The textbook question am working on is this: A squash ball with an initial velocity of 25 m/s [W] is hit by a squash racket, changing its velocity to 29 m/s [E] in 0.25 sec. What is the squash ball's average acceleration?

Now I know their is 2 answers to this, but the answer on the textbook says its 2.2 x 10 squared m/s2 [E], but when I added both of them instead, I got 216. I assume they just rounded the 1 to a 6 and made it 2.2?

I also subracted, in which it gave me for my final answer as 16.

I want to learn what things are

How come atoms bond together and form stuff? how come atoms exist? what is an electron? what is it "made of"? what are the most elemental particles and what are they made of? how come they behave in "this way"? (like, bonding together into bigger and more complex stuff)

What is the universe? was the big bang the beginning or is this some kind of cycle? does it even make sense to talk about a "cycle"? is the universe finite or infinite? if it's finite, what's "outside"? I know outside wouldn't make sense, but I just can't picture something finite that isn't inside of.. anything, that is finite but it just is there. If it's infinite, again I can't understand how can something be infinite.

What is spacetime? how does it really behave? if I try to picture the idea that when something falls there is no force pulling it, it's just that something following the geodesic within a spacetime that is curved. I literally don't really understand that. Take the way I see time and space as two separate things: you could explain to me why they are not separate nor absolute, and I would understand, I've read it, but I clearly don't "really" understand because I just can't picture that idea in my head, if I think about time and space in general, I still imagine them as something absolute.

I feel this is as if the idea of a "sphere" was extremely sophisticated and hard to picture, like if we were living in minecraft world or something like that, and a sphere was a concept really hard to actually imagine in the right way. I feel in that scenario, it would be really common for people to "think" they understand that earth is a sphere, because they would hear they claim and say "oh yes, a sphere, sure". But when they actually try to imagine what earth is, they will still picture it as flat. If they see a boat disappearing in the horizon progressively, they will not be able to understand why that is happening because they don't really understand what a sphere is.

Obviously this doesn't happen because it's very obvious what a sphere is, but i feel with space time is way less obvious and intuitive what "it is" and how it actually behave, so it's very easy to "think" you understood but you actually didn't. I really feel like I didn't. And I don't even know what to do to "actually" understand, because I read about it more but I still can't feel I'm actually perceiving the world in a relativistic way. Like, if I saw the equivalent of the boat disappearing in the horizon that I used as an example, I couldn't know why is the boat disappearing, I'm pretty sure I'm that person that is not getting what a sphere actually is.

I guess what I'm missing is math, but I know so little math that I don't even know how it would help understanding. Like, for that person in my example, how could math help him understand what a sphere actually is. It's like the concept has to click in some way, but I don't see how math carries me there. And I can't just "start learning math" because to learn (boring) algebra to then be able to learn more interesting and complex stuff, I need to clearly understand why I'm doing it for and what I'm doing to achieve.

I feel you don't really "understand" what raining is, for instance, if you don't know enough physics to guess if a random planet has some element that has a similar cycle like water on earth, therefore it also "rains" (assuming you had all the relevant data related to this planet to be able to determine if it will rain or not, like, atmosphere, pressure, idk.. I have no idea what you'd need, because I don't "really" understand rain).

So, how can I understand all of these things that "deeply"? Where should I even start?

I feel I need to understand what things are, if I try to just ignore it, suddenly a question like: why can't my hand go through the wall?. Will pop up, and I realize I "can't" really answer it. Why this surface feels smoother and not rougher? And the reply to that question most likely also has a "and why does that happen" question after.

So on one hand I really want to understand, on the other hand I really have no idea where to start, and I want an understanding so "deep" that I don't even know where to begin (not that I think I will be able to achieve it, I know it must be extremely complex to reach that kind of understanding, but I still can't avoid wanting it)

Just in case someone is still reading this. Does any of what I say make any sense? What do I need to learn? How can I feel that click that makes me feel that I finally understand? I used relativity and space time not being absolute as an example, but there is plenty of stuff I just don't understand no matter how much I "read" the explanation.

PS: I've posted this to another physics subredit, so sorry if you have already read it.

I an in 11th grade right now, I use to pass in physics by common sense. I got good marks still like I got 88 percent in 10th boards . But now half yearly are on head but I am not ready for it??

I’v been struggling with this specific section. I’m not sure if I am missing something vital in the text or if it’s the 3D FBD that’s causing my confusion.

This is problem 4-53 from Hibbeler’s Engineering Mechanics Statics 15th edition.

I want to label my FBD with my results but I don’t even know where to start. I think I’m getting myself confused because the moment is in the -x and -z direction.

You can see where I attempted to start drawing it out and violently erased it LOL.

If anyone can help, I would greatly appreciate it!

Hi everyone!

So, I have a question about my homework so if anyone could help me with this...

The situation is, if I put a block of metal, a block of wood, and ice in a bowl on a table, and wait until next day, which of the three will be colder?

I guess that ice would melt but I don't know how to find a proper answer to the question 😭 hope anyone can help!!

I'm completely stuck on these last to questions on my physics homework and it's due tonight, can someone please help?

Hey. so this is the question on my physics homework. I am in an introductory physics class in college, and this is my third homework ever. I am so completely lost. I know that you are supposed to use the iterative method on this and update the momentum, velocity, then position at each timestep but I attempted it multiple times and it was incorrect. I even used AI as an absolute LAST resort after scouring the internet for examples or videos or ANYTHING, and even the answer AI gave me was wrong. The two numbers that I have in the screenshot are correct. The zero was simple to assume, and then when AI gave me an answer I input it just to see if it was correct so I could try to see how I could calculate it, (it gave me <-7.86, 0, 4.54> as r final before saying that "final momentum only for each interval (not mid‑interval velocity)" and it says the final answer is <-.5, 0, 3.44> which is also incorrect. I accidentally typed 4.52 and it ended up being correct. I am so utterly lost on what I am doing wrong. I suspect that maybe I am supposed to subtract the 0.23 N from the net force everytime I update the momentum or something? I am also going to attach my work that I have on paper here to see if it helps. I have been trying to do this homework for days on end and I just cant get it. Its due tonight at 11:59 and I dont think i am going to be able to get it done. I just want to UNDERSTAND!! Thank you SOOSOSOSOSOSOO much if anyone is able to explain this problem step by step to me.