Tennis ball + Basketball momentum // Homemade Science with Bruce Yeany
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- เผยแพร่เมื่อ 10 ก.พ. 2018
- A very simple demonstration involving a tennis ball placed on top of a basketball and then dropped from a height. The result is a tennis ball that shoots up to 9 time the original height. Fun and easy to replicate and is a simple demonstration of the transfer of momentum through collisions between the two objects. What can replace the tennis ball to get better height? I'd love to have you try it yourself and report back your findings.
I wish you had been my teacher when I was in school! So interesting!
I was about to say the same. What a great guy sharing his knowledge outside the classroom. Top notch teacher.
i love seeing the students' engagement
I took the tennis ball straight to the nose when trying this at home 25 years ago, yet somehow still got interested in physics…
[Josh Myer]+ For me it was a ping pong ball to the eye. It really did feel like the full weight of a basketball on my face.
Superb teacher. I love how you take an interaction that is relatively mundane, find an simple but exciting demonstration and then expand that principle to many real life examples. There's not one kid in these videos that is disengaged, amazing talent.
So fun! Your students are lucky!
WeBDaEMoN33 This.
This is a nice way to show students how energy is conserved! Good job!
So many interesting stuff from this teacher... and it's never too late to learn... I never thought about momentum transfers before...
THE EGG IS A GENIUS IDEA I AM STEALING THAT WHEN I BECOME A TEACHER
Thanks for all your videos! I use them regularly for inspiration and teaching 😻
El mejor profesor de física de secundaria con experimentos demostrativos muy creativos
The more an object deforms when hit the more energy it absorbs from being bounced (or bounced upon), as some energy goes into the deformation. These objects are known as being inelastic. The more elastic the collision, the greater the transfer of momentum. Try holding a billiard ball on top of the basket ball.
thank YOU for taking the time to Demonstrate this CLASSIC example of Conservation of Momentum..... it's much appreciated.... :) Cheers!
fantastic and inspiring Science teacher. I try to be as good!
Como siempre, sus videos son muy interesantes, instructivos y entretenidos. Gran labor Bruce Yeany !!! Gracias por compartir conocimiento y experiencia.
As always, your videos are very interesting, instructive and entertaining. Great work Bruce Yeany !!! Thank you for sharing knowledge and experience.
As always, you made a great video. Thanks for sharing
Great job we need more educational leaders like you! Aloha from Hawaii!
I too would have loved to have you as a teacher Bruce, you are too much fun.
Thanks Bruce from Year 11 GCSE Physics class in The Wirral UK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Bruce=Legend
Great video sir...i liked your way of explaining.
You are really great teacher.
I like your videos. I show them to my kids and translate for them. Thanks.
That multiplexed clock over your door was mesmerizing. I had to watch the first bit of the video three times before I even started to pay attention to you... lol
This really helped my project
Your a great teacher
Muchas gracias.
I hope that all teachers in Egypt become like you, sir
great teacher
i love your vids prof!
At age 29 you're at the top of my favorite channels on TH-cam Bruce. Still learn some things too :P, keep up the great work & never lose your inspiration :)
Great activity to introduce my students to momentum. My basketball was flat so I did this with a tennis ball and a mini-super ball. Worked great! Can't wait to try it with the bouncy ball and the basketball. :) For distance learning, I had them complete it themselves with whatever they could find around the house & take a slow-mo video. Very fun! Can't wait to check out your other videos for more ideas. Thanks!
Hi Jeff, there is another version that your students can try, a plastic cup about 1/3 filled with water and a pig pong ball floating on top, drop it and ping pong ball flies up. I will try and do a video on this in the future
@@YeanyScience thanks, Bruce. That sounds amazing. I’ll definitely give that a try. I’m looking for ideas like this that students can do with items they have at home during distance learning. Thx again!
Seems having the smaller top object be harder helps based on a few toys I had sitting around.
Also having the object that transfers energy the most (bigger and bouncier)
Thanks!
keep up the good work sir
Love the CFL clip
This is also a great metaphor for what happens in a supernova.
Hi. Congratulations for your very interesting demonstration. It seems to me that the height reached by the tennis ball would be about 9 times that for the basketball only if the latter is perfectly rigid( and assuming an infinite difference in the two masses). You see objects flying much higher and that is probably due to extra elastic deformation energy in the basketball which is transferred to the tennis ball after the former ball touches the ground.
Good video it's very educational
Thx so much
1:30 RIP Tennis ball we will remember you
I laughed when the lighter fell out of the kids pocket at 4:42
You brilliant man. My pore Scrall in the UK is being 'torcherd' with facts by rote, and no fun - a curiosity clamp down! Have shown her your films.
very good
Top bloke, would love to buy him a beer.
Yes
thank u this helped alot. lit
The world's coolest teacher is back!!
I bet there could be enough energy transfer to the tennis ball to put it through a ceiling tile if the basketball was dropped from 3/4 the height of the ceiling with the tennis ball on top of it.
funny you should mention it as that is what happened to us. While the ball didn't put a hole in the ceiling tiles, it managed to lift a few of them up. A couple of them I had to reposition a ceiling tile with a long pole
That is most impressive. Just got a little too high for the camera to see it.
hello, sir . you are Brilliant, i am very big fan of you.Now I m 19 years old and I want to become a teacher like you.and this videos will help me a lot in future, this is what i want to do, i love science and specially teach a science by playing with a live demonstrations . Thanks a lot once again
Hello Gaurav, Thank you for your note, I have loved science and teaching and think it has been a wonderful choice. I truly hope that you will also. Good luck and it's nice to hear that my videos have helped.
Its my pleasure sir, thanks for the reply .and one more question , I am an indian, where are you from?
Might be interesting to try different-sized ball-bearings ... just remember the safety goggles!
What's the PSI of the basketball v tennis ball? Or is it simply mass recoil momentum?
Do hardboiled eggs or raw eggs bounce higher?
Will this make me better at sports?
This is very interesting, but what does it mean?
So would it work the same if we trade the basketball out for a brick?
Im assuming this has to do with the relative elasticities of the two objects? I guess the optimal would be a very elastic high mass object on the bottom, and an inelastic low mass object on the top. Then again, I'm just a toaster, what do I know.
I quite don't think so. The stuffed animal did not go any higher. I guess both need to be elastic but the upper body needs to be rigid (which I guess will result in the application of larger forces with same or less compression).
You are Richard Feynman of youtube !
Maybe even Brayant tuckerman
Dear Bruce. you should ask your subscribers for a slo-mo camera. I think you would put it to good use.
Me who was in third grade when this was released and saw it early:
:0
A hammer is a good example of how we can use this for constructive purposes. You don't grab a tack hammer to drive a railroad spike.
How to calculate velocity in this case
Those kids who'd spent their school years with the teacher will rememeber this in their life :)
That Larry in the box. Lol
Nearly broke the light bulb in my room while doing the tennis and basketball experiment
When do you normally film? At night?
The shots with students are usually from an enrichment period where we can try extra examples of concepts we are studying, otherwise I shoot after school or on Saturdays. 95% of the shots I'm by myself with the camera set on a tripod
Hi Bruce, thanks for another great video! A bit out of topic, but how much budget do you receive to make videos like this?
Budget?? good question. I make these videos on my own so I don't really have one. While my school district allows me to use my classroom as a location, this is not part of my teaching assignment. I make these videos after school using a few basic pieces of school equipment but most of the pieces are ones that I have built with my own money all on my own time. I do have commercials on some of my videos but it hasn't amounted to much. So why do I do it? I do it as a hobby and I enjoy the science
I think all of your videos are extremely well made. I believe you convey your point very well and in a manner everyone can understand, I also love how you use multiple examples in every "lesson", quite literally taking it down to a science. Please keep doing what you do.
One more thing, you remind me of Walter Lewin. He is awesome and so are you.
Physics Girl and her Stacked Ball Drop did almost the same thing nearly 3 years ago. She did 3 balls but didn't use eggs why looked like fun.
Hi Alan, this is a demonstration that has been around for years. At one time it was sold commercially with 4 different sized superballs. I've always found it useful to get kids excited and thinking about variations that would be done. Interestingly enough, I've never thought to replace the basketball with something larger, some one suggested a large exercise ball in the comments, we'll have to try it.
YE BOI
So my undergrad physics prof said that he did the math for what you get if you start with a superball, and stack ten more balls each massing twice of the one above. The bottommost ball would weigh about a ton, and he said that the superball would reach velocity, but would burn up from friction. That image stuck with me. (just checked some math now, and if a superball is 45 grams, then mass of the last one would only be 0.04608 metric tons, so he might have just made it up. Pity)
I didn't know where he go those numbers from, I got about 46 kilograms, same as you.
When you use 3 balls (maybe basketball ball, tennis ball and table tennis bal) the result will be much better. :)
We did something just like that in class a few weeks ago, but with a golf ball and ping pong ball. I'm a freshman in highschool and we're doing the same things as you do with middle schoolers. It's kind of sad.
HI Truly Infamous, these are 8th grade student so you're not that far ahead. I hope that your class is trying activities, I keep hearing complaints from too many viewers that never did.
You've got a sweet 'stache for being only a high school freshman. More power to ya!
MrUnite4thechildren He's got a tough paper round.
when you change materials it involves TOO MANY complicated factors, that are not mechanics per se, thermodynamics at play.
have you told the kids about these complications?
do you like thermodynamics too?
While I love working with middle school students, (7th and 8th graders), it does not allow me to kept into the depth that I would like to. I'd love do a few demonstrations on collision,s elastic, inelastic. when I get a chance. Yes, thermodynamics is an interesting topic, I'd love to do more it also.
What happens when you drop 2 basketballs or 2 tennis balls?
Hi James, we tried that, it was not impressive at all
Was there people in the car that got hit
Супер!
Public school demonstration of momentum. Here we have a double brick wall. You will stand with your back against the wall. You have a choice. Either you can be hit by a ping pong ball travelling at 100kph, or a double decker bus travelling at 1kph. You choose the bus........
So cool how the egg doesn't break, I would have 100% thought the egg would crack off the top of the basketball.
Bruce your content is always amazing, do you have a patreon? Take my money pls
Thank you, I don't have a pattern, I'm not even sure what that is. I just make these videos just enjoy it.
Fair enough, if you are interested the Patreon website is: www.patreon.com/ . It's basically a website that lets others (like me) contribute to you directly, for example $2-$5/month. It's cheap from the patron's perspective, but multiplied by the number of patrons it can end up being significant income for you.
A large percentage of TH-camrs use patreon for supplemental income because TH-cam ads don't provide a whole lot. I already contribute to about 7 other youtube content creators like yourself. I realize you already have a job, but it could be a cool way to bring in some extra cash you could put towards your homemade science projects! Probably need to run it by your administration though if you want to monetize.
Have a good one!
Golf Ball
Hey Bruce it's been awhile since I last spoke to you. Have you thought anymore about rockets in a vacuum?
I did and have a few ideas on how to test it.
This has been done at least a couple times on TH-cam. Here's one from WarpedPerception: th-cam.com/video/GxBRQXxBRic/w-d-xo.html
My college physics prof did this in class.
Equal and opposite reaction
ಈ ಸಂದರ್ಭದಲ್ಲಿ ವೇಗವನ್ನು ಹೇಗೆ ಲೆಕ್ಕ ಹಾಕುವುದು
I would have guessed that the cucumber would have gone the highest...
Epicox, like si vienes por F Lund
Please please... Make the video on blower roller how to make it at home. This game is in carnival game. So please build that game and make the video on it because I also want to play and build the game at home
Hi Megha, I'm always looks for suggestions but in this case I have no idea what a blower roller is, can you explain what it is and I'll try to give it a go
My teacher assigned this for homework and all we have to do is watch it and answer a question
Hi Mr. Yeany. Sorry to be posting this publicly but I didn’t see a way to message you directly.
My name is Susanne Sprague and I am writing today to ask for your permission to use a segment of this video in a project I am working on. We wish to use only a short clip of your video [timestamps 0:57 to 1:04 (no students are shown.)] We would like to include this 7-second clip in a formative assessment we are creating for a new commercial product, called Venture.
Some background: Venture will be an online platform that will allow educators to build and easily deliver assessments to their students. We (Breakthrough Technologies) are currently developing a library of formative assessments aligned to NGSS to be available for use if the teacher feels it will assist in their classroom program. These are online only and will not be distributed outside of the online platform.
If you grant us permission, we are also more than happy to cite you (and/or your TH-cam channel) as the author of this content. Please let me know if you would like more information on the company, the project, and/or the planned use of the video clip.
Thank you, Susanne
yee
Anyone from Summit?
2:15 really boy?
Why is there a Larry the cucumber in the box at the beginning?
as much as i do believe you deserve far more fans, i wish you had of used the term "roughly" or something with equal meaning during the ball drop because while that would work in a vacuum, the tennis ball started about half a CM above the bottom of the basketball and clearly in your slowmo footage ended 3 CM past the basketball. of coarse i understand your vids are meant to be intellectually accessible but it just bugged me. still love your work
Hi Robin, that shot bugs me as well, I would say that was a poor shot of the dropping, we have done this thousands of times over the years and if the small ball is not sitting on top of the basket ball it is the poor release of the person dropping it, not due to the air resistance. If you try it yourself will see on a good release they will stay together.
0:57
I love VeggieTales. It is my favorite anime
Looks like the basketball lost about the same momentum no matter what was on top of it. Well, except Larry.
Put the tennisball ontop basketball ontop of a gymnasticball.😀
that sounds like a great idea, does it work?
I have tried this years ago with only the gymnasticball and the basketball. I think it worked but I don't have the gymnasticball anymore.
Physics girl made a video with three balls.
I like your videos. I wish I had physics in school like this. Greetings from Germany. :)
Go Riders
Screamer warning 3:15.
Hello, Mr. Bruce, I'm Davira. I hope you can reply to this comment
I think this video is amazing, we invite students to understand the concepts of physics with fun
I want to ask permission to use this video for my undergraduate thesis
I made a book with additional videos that can be accessed through an application,
this video will be included in my application that I made
I will still include your channel
thanks for your attention Mr.Bruce
Hello Davira, thank you for asking. Yes, you may use the video for educational purposes.
@@YeanyScience Thanks Mr. Bruce
Some pupils have teachers that suck and some pupils have teachers like Bruce Yeany.
*I'M PICKLE RICK*
kidding, I know it's Larry.
0:17 is that Larry the cucumber?
yes, he has participated in quite a few demonstrations over the years