Stacked Ball Drop

What happens when you drop a perfectly balanced stack of balls? And how is the result like a supernova? The classic momentum transfer demonstration, taken to the next level. A big thank you to my nephews and niece Drew, Max and Whitney for creating the trampoline footage! Thank you to the Vlogbrothers for sponsoring this video, to Kyle Kitzmiller for filming, and to Island School on Kauai for providing the balls (ischool.org). Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Music: YouTube Space Images/animation: NASA instagram.com/thephysicsgirl facebook.com/thephysicsgirl twitter.com/thephysicsgirl physicsgirl.org

Comments

Floppy Arms Here: Finally, something I can try at home lol

Adam Katinsky: Woah! That white ball (the small one) really bounced high! Amazing

Troy Jimenez: YEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEAH!!! <3

LeA S: so what would happen if you used two basketballs and one tennis ball would it still go higher or would is have a different out come

Jacob Zimmerman: I've watched a few videos now where you've talked about something bouncing, and you only ever mention energy lost to heat, but you don't mention sound. If you ask me, I'd say that explaining the loss of energy to sound is a lot easier for a person to grasp, since you can dribble a ball for a few minutes without noticing a change in temperature.

xMsa: i came from brilliant

Banana Bananae: So can we calculate how much height it will travel up?

Freikorps11/11: Most of these videos are the stuff i did st school, science for children but some are very good like this one.

Tins: damn i love your channel and i understand everything u say <3 <3 like pls can someone not call me a crazy nerd for loving physics so much?

Jose Carvajal: 1:53 lol

QUIVOX: Could you make a video on the heinsberg uncertainty principle?

Joseph Casey: I wonder if you sprinkled a little salt or fine sand where each ball touches they would stay in place longer and then you can do the super duper quadruple bounce. I can watch her bounce balls all day...

Joseph Casey: 0:31 is that a can of chew in her back pocket.. If so, it's the luckiest can of chew in the world.

Kenneth B: At least half of all these comments say she's hot or something like that. XD

Xavier Hung: The action lab al so did thi experiment

Michael RCH: Fun fact. In a supernova, much of the outward momentum that causes the explosion of the star is carried by neutrinos. But neutrinos almost never interact with atoms. If you fire a neutrino through lead, you need 1 light year of lead to have a 50% chance of an interaction with the lead. Yes, 1 light year... they don’t like interacting with other matter.
So this gives you an idea of how many neutrinos are created during a supernova, but also it tells you just how dense the material in the star’s core is that many of the neutrinos actually do interact. The “wall” of collapsing stellar material is so incredibly dense that the neutrinos just can’t help hitting it and repelling it outwards.if you want to know more, I recommend the Crash Course Astronomy course with Phil Plait. It’s epic :)

Google Assistant: I wonder how they managed to stack it.

justka rolisyt: damn i didnt thought of doing that

forestsoceansmusic: Cool! And Physics Girl, you are so hot! =P

Fan Yang: Damn! Your feet attract my attention more than these balls haha

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