Elastic and inelastic collisions | Impacts and linear momentum | Physics | Khan Academy
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- Опубликовано: 21 июл 2024
- In this video, David explains what it means for a collision to be elastic or inelastic.
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That ice cream scoop runs faster than me.
😂😂😂😂😂
Khan Academy saves my life everytime 👌
But could you please organise your videos into playlists? It makes it easier to find
Check out their website, it’s pretty sweet
Bollywood & political Khans are spreading dirt but this Khan is really a divine teacher ❤️.
Wild thing to start off with 💀
at 3:11 I love the explanation of molecules.
This video better save my grades
I remember which is which because elastagirl saves the day (elastic collisions save the KE)
Excellent explanation, thank you.
some parts have some extra digression that doesn’t feel super relevant (eg: explaining the kinetic movement of molecules- nice to know but not necessary) but the rest is sooo well explained. i really appreciate that you differentiated the definition of an elastic collision with an object “bouncing” because i assumed if an object bounced it was elastic! also appreciate you differentiating a perfectly inelastic collision from an inelastic collision. thank you so much for clearing this all up!
Best example for explaination
you guys are doing it greatly..
So on a hard surface, a steel ball bounce would be more elastic than something like rubber right?
Great! Fantastic explanation!!!! Thank you VERY much !!!!!!!!!!!!!!!!!!!!!!!!!!
Wonderful explanation. This guy was reading my mind throughout the entire video and answering my questions before I could even ask them.
you were under his genjutsu all along
Damn .45 kg that's a heavy scoop of icecream that's almost a whole pound of icecream
Love you guys. Thank you once again!
Khan academy is the best. It always helps me earn good marks in my tests. Keep it up.
smooth🏅👏
Is there a way to tell if the collision will be elastic or inelastic before the actual collision with just the given momentums
Nooooo
boii..give this guy an ice cream !!!
thanks khan academy !!!!!!!!
Rumal Mahindaratne
D,d,d
why do two things sticking together imply a collision is perfectly inelastic? also if inelastic means kinetic energy is not conserved, so only a fraction of original kinetic energy remains after the collision. would a perfectly inelastic collision not imply after the collision there is no kinetic energy ? and thus no velocity?
dude i feel like giving you a kiss it never clicked what "conserved" mean was until now
can i ask something? is it possible that totalk kinetic energy is conserved but momentum is not? if yes under what circumstances would it be?
maybe in uniform circular motion?
the direction of velocity keeps changing but the magnitude of velocity remains constant
Sir..Kindly tell me...What are the conditions of elastic nd inelatic collision?
I'm getting sleepy watching this 😂
Jesus Christ loves you 🥺
How did you get that accent
sir you just said that initial KE is greater than final KE in inelastic collisions. But in this example it was smaller. Why?
Safia Gangar initial was 46.5 J and final was 5.96 J
KE initial is bigger than the final. watch it again
Safia Gangar I love you please marry me. I am in America today. tomorrow I will come to your house
srinivas polisetti lmfao wut? Get outta here. You perv
what do u mean by perfectly inelastic collision?
basically the two objects "stick together" after colliding...
*throat clear* SketchBook
Awesome af
under what circumstances would anyone throw a scoop of ice cream at a basketball
Isn't gravitational attraction force rather than electromagnetic force between the small ice creams? 🤔🤔🤔
@10:32 Sound waves requires energy? I though sound waves need pressure waves.
doesnt some energy goes into friction too?
Energy is lost in various ways, but when we solve questions we ignore them.
The collision is obviously inelastic BUT the when he proved that that was the case he only found the change in KE of the basketball, not the entire system. The basketball could have given most of its KE to the ice cream scoop and therefore the KE of the system may have been conserved.... Does anyone else see this? or am I totally off?
it’s not just the basketball because he takes account everything the ice cream is doing
Isn't it MINUS 8 m per second ² becaus3 that ice cream is going to the left 🤔
bro really wanted some ice cream
thats a wham scoop of ice cream ngl
Am I the only one who doesn't get this? The ice cream scoop example is kinda confusing me..
How so?
Every time he says ice cream replace it with baseball. It doesn’t really matter what it is. The point is that something bigger collides with something small
If the ice cream and basketball start off going in two different directions, shouldn't the energies cancel instead of add?
No. If two things go in opposite directions, one of their velocities is negative while the other one is positive. However, with Kinetic Energy, the velocities are squared (1/2mv^2), making all of the negative velocities become positive.
Hope this helps, even though you asked this question 4 months ago :)
ENERGY is a SCALAR quantity .... it doesnt cancel out
when he says "if youre clever" well damn.. I guess I'm not!
Who is ready for examssss???
I
delicious atoms and molecules LMFAO
If iscream bounces in a basketball it will splash of
Glad this chap isn't my teacher.. All that talk on bloody icecream-
Pls improve ur handwriting