High school physics Definition and 105 Threads

I am an electrical engineer and I like to educate high school physics

Fg = m * g: Fg = 30 * 9.8 = 294 N Fnet = m * a: Fnet = 30 * 1.2 = 36 N Fax = Fnet + Ff: Fax = 36 + 10 = 46 Fa = Fax / cos(angle): Fa = 46 / cos(25) = 50.75 Fay = Fa * sin(angle): Fay = 50.76 * sin(25) = 21.45 Fn = Fg - Fay: Fn = 294 - 21.45 = 272.55 Ff = mu kinetic * Fn, solving for...

The correct solution uses angles and trigonometry. My solution is as following: - Suppose the forces exerted by friends 1 and 2 are F1 and F2 respectively. - There are no net force in the x-direction, so F(total x) = 0. - F(total y) = F1 + F2 - mg = 0 (initially). Rearranging gives g =...

Question 2a: It is really hard for me to get my head around this. The solution of this question mentions the momentum of the ball after it rebounds is 12kgms. My attempt at this solution is as follows Before collision Momentum of ball= mv= 2x3= 6 kgms and momentum of wall= 0 Therefore Total...

Can you recommend introductory physics book for high school that contains E & M ? It should not have any integrals.

Hi Everybody, Could you please point me to some good video courses on Physics for the High School level and generally of the introductory level? What I could find meanwhile are: "How Things Work: An Introduction to Physics" from Coursera and "Intro to Physics" from Udacity. I am looking for...

Hello everyone, I am so happy to find PF. I like physics very much. And I'm excited to talk about relevant knowledge! ٩(๑^o^๑)۶

Dear all, for my education as a physics teacher (Dutch high school, ages 14-17) I have to make a didactical assignment. This assignment consists of applying the so-called "lesson study" method, see e.g. https://tdtrust.org/what-is-lesson-study https://www.uwlax.edu/sotl/lsp/index2.htm My...

Summary: Gradient = Acceleration(?) Area = Time (?) Good evening, I have a problem that presents itself in a distance (y) velocity (x) graph. I've never come across this, and in my Physics textbook, the section dedicated to graphs does not have it. My question is, what does the area of the...

I started off by finding when Fg=Fx: (72)(x)=(31)(9.8) x=4.2193m After this I'm stuck and have a few things I'm confused about: When the penguin's jumping, is there elastic energy? (because the rope's getting compressed? Or maybe not). Also, I know you can use energy conservation, but...

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I have had around 2 year gap after finishing high school. The last 2 years of high school (11th and 12th grade where calculus, coordinate geometry, straight lines, circles, vectors, functions, quadratics, polynomials, probability, permutation etc. are taught here) , I barely studied and some how...

I am a freshman in high school currently and I am taking physics, but for me it seems too difficult even though I think I have tried everything (Reading from the textbook, tutoring with the teacher, khan academy, studying a lot...) The teacher is not very good at teaching, not saying this as a...

How can radioactive decay be random if we can calculate aproximately when it will happen . For example we know that an isotope will decay every 2 years by calculating the half life . Doesnt that mean that the decay is systematic rather than random because we can calculate when its guna happen ...

I am in a high school physics class and have been recently assigned a mouse trap. We were given a mouse trap, that is all, and sent out on our own to create one. The requirements for this specific mousetrap car are to go forward 3 meters, then backwards 2 meters, and finally forward three meters...

I am an student in physics department and I will graduate very soon.In my past four year I have done a good work and get a nice gpa.But as I get more and more familiar with advanced content such as quantum field theory,I become very comfusing about what I learn in my high school. Because I...

Hello y'all! I'm a high school student and I'm looking for some advice:) I am very interested in physics, quantum mechanics in particular. I'm a bit of an overachiever, and I usually overthink everything. I come from a family of doctors, and although they don't pressure me into following in...

Homework Statement Mariana is volleying with Old Man Miller and returns one of his feeble tennis serves. He serves the ball such that it is moving at a speed of 35km/h [Forward] when she strikes the 0.060kg ball and sends it back over the net at a velocity of 55km/h[Backward]. a) If the ball...

I am a new member here and decided to join Physics Forums to get help to prepare for Physics Olympiads. I am a high school sophomore. Going to be a junior soon. I have taken advanced Math classes via MIT OCW and the internet. I am also proficient with Mechanics, but nothing international...

Would it be a good idea to take both AP Physics C and AP Physics 2 in my senior year of high school (next year for me)? Does anyone have any experience with this and if so what was it like? Would I be biting off more than I can chew or should I go for it?

Homework Statement Lee is riding on her 6 kg skateboard with a constant speed of 2 m/s. She jumps off of her skateboard and continues forward with a velocity of 4 m/s relative to the ground. This causes the skateboard to go flying forward with a speed of 18.5 m/s relative to the ground. What is...

Homework Statement Used a solar cell and a ray box, altering the distance from the solar cell to the light source in 10cm increments. Did the usual high school experimental controls and repeats. Assuming that the voltage is proportional to the irradiance, I am meant to graph the results...

Homework Statement For my high school physics class we made roller coasters out of card stock with various loops and funnels. We then had multiple questions to answer. I couldn't seem to figure this one out. Why does the power have to be found at the bottom of the loop? Explain in terms of...

I am currently picking out my courses for grade 11 next year. I have the opportunity to take both grade 11 AP Physics 1 and grade 12 AP Physics 2 in the same year (semestered). If I do I won't have any physics courses in grade 12 instead I'll be taking grade 11 Pre-AP Chemistry and grade 12 AP...

I have read that Feynman Lectures on Physics is pretty good; however, I also read it isn't a replacement for a good textbook. So I wanted a good physics(high school level) textbook that I could read Feynman Lectures on Physics along beside it. Regarding mathematics, I have completed Calculus I...

Hey guys, I'm in high school and we have to do a presentation on any physics topic we like. The teacher is just trying to assess our class as it is only the beginning of the school year. It has to be a minimum of 3 min and maximum of 5 min. Are there any topics that aren't too complicated, but...

Dr. Courtney submitted a new PF Insights post Resources for High School Physics at Home Continue reading the Original PF Insights Post.

Homework Statement If a bike wheel rotates 9.4 times while slowing down to a stop from an initial angular velocity of 8.1 rad/s, what is the magnitude of the angular acceleration in rad/s/s Homework Equations α = at / r α = ω / t α = Θ / t^2 ω = Θ / t ω = v / r Θ = ω t + 0.5 α t^2 v final = v...

Homework Statement A car is traveling at 27.8 m/s, it undergoes a negative acceleration of 2.6 m/s/s when the brakes are applied. How many revolutions will the tires go through before the car comes to a stop if the wheels each have a radius of 1.0 m? Homework Equations α = at / r...

So, my thread title was too long, here is the full title: Why should the kinematics equations be taught in a regular high school physics course? < Mentor Note -- thread title fixed (we can lengthen titles) > Let me explain my situation. I will teach physics in a different country next year...

I'm new to this site. I don't know if this question even fits here, but here goes. So I want to learn physics, but my problem is I have very little to no knowledge on it. I am currently in 10th grade. I'm trying to understand what the teacher is talking about, but I'm having a very hard time. I...

Homework Statement A car moving with an initial velocity of 25 m/sec north has a constant acceleration of 3 m/sec2 south. After 6 seconds its velocity will be? 7 m/sec north 7 m/sec south 43 m/sec north 20 m/sec north 20 m/sec south Homework Equations Im not sure, but X-Xo=0.5( V + Vo)...

Are high school physics teachers only allowed to teach physics that is strictly empirical?

I'm currently a Sophomore in High School taking Academic Chemistry and a Straight A student (except for a B+ in Spanish 3, atm), and since I want to pursue Physics as a career path, I really want to take AP Physics. I am only in Geometry right now, but I'm planning to take Algebra 2 over the...

I am looking for some advice. I have always been really interested in teaching at a high school level or community college level. I am kind of close to getting my BS. I have ten or eleven classes to go. But they're spread out over the next two years so I have two years to finish. I've done some...

I have always had a keen interest for math and Physics, however I have never had much physics in school. I moved to different schools a lot, and therefore I never had anything else than F=ma and basic electric circuitry. Since my father is a math teacher, I have been able to go through Spivak...

I tried to keep the thread name as applicable to my question as possible. I'm sure this question has been asked before I apologise in advance I could not find the appropriate answer :) I did not do physics at high school as when I tried to change a sub to physics they told me I was too late...

Hi All. My name is Simone and i have joined for the purposes of correcting my personal educational inadequacies. I have an inadequacy in my formal education as i only went to Year 8 in Australia. I am struggling to help my daughter at the moment. My 16 year old daughter is stumped on some...

Homework Statement For a grade 12 physics project we have to stretch a spring along an inclined plane and then let go so that it hits a target. I know the mass of the spring, the angle of the incline, the height of the incline (how high the front of the spring would be off the ground before...

Hi, I'm an 8th grader (also called 2nd year hs here) who's really enthusiastic about physics. This is my first post, so I hope you're okay with me making some mistakes (I've been reading stuff on this forum for a while now, though). Physics is still 2 years ahead, and I've tried waiting but I...

I basically started learning physics 4 months ago. I want to cover the whole physics school curriculum in the next 9 months, as well as the important chemistry and maths. I want to be prepared to start a physics degree in 9 months. I have around 4 hours a day(approx) to devote to it. I want to...

Hi Physics Forum! This is my first post I enrolled in adult education for Pre-calculus 12 and Physics 12. My marks weren't too good coming out of high school because of personal reasons. Anyway, in terms of Pre-calculus I can do it with my eyes closed. But when it comes to physics all I can do...

I'm trying to understand forces a bit more, but i have questions that I've been searching online for and can't find an answer. My questions: Question 1. is Fnet = ma? Because I'm doing some questions my teacher gave us and the explanations say to use F=ma, not Fnet. F and Fnet aren't the same...

If you are a high school student, a physics buff, and enjoying independent study and exploring, here are some recommendation for you: 1. MIT classical mechanics and electromagnetism available in MIT OCW and edx. I recommend edx because it is better organized and contains review and exam section...

Find the acceleration of the system Ff= u(Fn) Fnet=ma I would just like to know if the way that I solved this problem is correct.

Hey PF, I'm new to the forums and I want to ask you for some guidance. I'm currently in my junior year of high school and took honors physics last semester. I WAS planing on taking AP Physics B in my senior year, so I have a fair understanding of physics before going to college. But sadly AP...

During a physics competition, I came across this question. My work was \begin{align*}\Delta S &= \frac{Q}{T} \\ \Delta S &= \frac{1.25 \times 10^3 \, \mathrm{J}}{348 \, \mathrm{K}} \\ \Delta S &= 3.59 \,\,\mathrm{\left( J/K\right )} \end{align*} but I was stuck in between two answer choices...

Homework Statement "A ball rolls off an incline plane. The speed of the ball is 22m/s and the plane is inclined at 32 degrees to the horizontal.If the incline is 9.0m above the ground, how far from the base of the incline will the ball hit the floor?" (The rounded answer is supposed to be...

Homework Statement A car starts from rest on half a kilometer long bridge. The coefficient of friction between the tyre and the road is 1.0. Show that one cannot drive through the bridge in less than 10 seconds. (Take g = 10 m/s2) Homework Equations Frictional force = μN Kinematic...