Potential and Kinetic Energy

Mr. Andersen explains the difference between potential and kinetic gravitational energy. He also uses physics to calculate the energy in various objects.
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[@NicosRap]

Your 6 min videos help me learn more than I do in an hour of class

[@michaelg2378]

True

[@ProotJuice]

IKR

[@seanbetham6853]

+Nico's Rap Holy shit.... ikr these teachers are soo bad.. i have a chinese teacher that bullies me and picks on me... in so meny ways... ;'( i cant handle it anymore.

[@NicosRap]

Kevin Oliver Haha, I took Chinese in middle school and the teacher wasn't the best either. 😂😂

[@seanbetham6853]

she is so mean to me you have no idea... she is also wrong in almost everything... So there is 2 teacher. the main "smart teacher"then there is the co ed teacher " mean china women who thinks she knows it all".... So i asked the main teaher to fix my work and she did.. and the china teacher said the the fixed work of the main teacher was wrong and she told me i had to re do the entire thing.... BUT THE CHINA TEACHER WAS WRONG BC I WENT TO THE MAIN TEACHER AND TOLD HER.

[@morganwinstanley9949]

I swear i learn more from KZbin videos than I do my teacher. Why waste an hour and a half in class when i can spend 6 minutes watching a video.

[@soccerandtrack10]

I learn from freind teachers and youtube.

[@michellehong1998]

lastminutestudysquad where you at?

[@nourasser6667]

here :)

[@jacktastic7556]

Here

[@seungjunemin6650]

here

[@mefamin507]

Howdy

[@desertpunk2216]

Oh no am here ain't I

[@kyraburkart4441]

You my friend. actually make sense. something my science teacher lacks

[@laurencox7941]

Thank you for your simple explanation, and not talking really fast- like a lot of people on Utube

[@mahimakochar9134]

Mr. anderson isn't the gravitational acceleration positive 9.8 m/s ?? Or am i getting something wrong here?

[@glassunicorn1525]

Mahima Kochar m/s are the units for velocity. You are right that gravitational acceleration is usually about 9.8m/s^2(it varies slightly with altitude). Some people put it as positive, others negative. Either way is fine as long as the sign remains the same with in a problem. For an example if you decide the downward direction is negative your gravitational acceleration will always be negative, and the same goes for positive. Hope this helped:)

[@glassunicorn1525]

The +/- direction thing confused me at first, just remember that the sign is just a symbol. You can decide away from the earth(up) is negative, and down is positive and vice versa.

[@razorclawttv3923]

It's not 9.8|m|s^2, it's 9.81m/s^2.

[@yanksguy23]

Excellent work. Thanks from a fellow science teacher.

[@sandrakarakas2283]

Did this is class for 2 hours -.- did not understand a bit, watched this for 6 min, understood everything

[@fakherhalim]

Thank, Mr. Andersen. That is a great explanation!

[@collegetech8936]

to convert mph to m/s, just multiply your speed by 1609 (how many meters in a mile) then divide that by 3600 (how many seconds in an hour) this makes it (speed x meters)/(seconds), hence the notation, meters/second

[@aahmadiii]

Thanks haha

[@yukarikona4524]

Thanks I was kinda confused with thatt.

[@andrewhur6465]

This is very helpful! Even though I'm in 6th grade, this is very interesting and good help for my test!

[@Eli-ou8sq]

you in grade nine now?

[@3juliano680]

how you learning this in sixth grade bruh im in 8th grade just learning this

[@JustinCrediblename]

with this video, I was able to calculate that a modified lake tahoe (lake height + 50M) and clearlake region (dammed up to 550M elevation) could power the USA's current energy needs for 7 days if converted to pumped ocean storage at 50% and 70% system efficiencies respectively. That's the time frame for which a UCSD physics professor claims that we'd not need to tap any other power source to power our country. pumping would be handled by renewables, connected, presumably, by a high voltage DC underground grid due to 2x efficiency of current high voltage AC overhead line theoretical maximum efficiency.

[@rxyyxn7465]

what the actual fck? i learn so much in this 6 min vid than my 40 min class?

[@burstman1260]

Love your video ......please upload moor soon

[@Trickdaddyphil]

I understood in 6 minutes what my physics teacher failed to teach me in 45 minutes.

[@MrASquared100]

You got good stuff going here, keep it up man! Just one thing: The physics course am doing, in England OCR, the formula that you used for p.e is what we use for GRAVITATIONAL p.e, but with your explanation and worked example this seems fine.

[@tidussora1022]

HOw do i figure out the minimum kinetic energy

[@P-M-M-97]

Thanks a lot sir!

[@rapprelevant3313]

Interesting to the core. What if kentic energy is useful to evolve our automobiles. I don't mean to measure the energy it is traveling in, I mean energy that can be given to a automobile to set a significant forward motion. What if science can take a foot long object (strip like ) that can create potential energy and set it down on a pavement. Then take a second strip set it a foot apart and so forth for a distance of half a mile. Take a vehicle light enough and suitable to begin at one point,the first strip. And allow the first strip to generate the energy to push the vehicle forward to the next strip and then that strip to the next and so forth for that half mile distance. It could be used on our freeways and main roads. It could a beginning to revolutionizing our autos and calming its toxic waste.

[@omarkhamis523]

rapprelevant3313 that's nosense ke is something and using other smart source of energy is another thing

[@taylor842]

this is pretty good, dude/

[@levilandrus9056]

does anyone know if you have to us significant digits

[@VideoGuy879]

Thanks very much! A great and helpful video!

[@janetb6844]

Thanks for sharing!! Can you do a pole vaulting problem with PE and KE?

[@TomHendricksMusea]

What does a light wave look like, with all kinetic energy and no potential energy?

[@marcbayoud3851]

very well explained man

[@davidmacatangay4235]

at 5:10 Getting half of .145 kg is .0725. 45 multiplied by itself is 2025. Multiplying 0.0725 to 2025 will be 146.81. How did it end up to 150? What did I miss?

[@myforcemylife5325]

Thanks man u cleared my ask concepts

[@jackiekelly460]

Thank you. I have learnt more from watching youtube clips on physics that I have with our uni professor :(

[@kimjongoof8741]

Thank you!

[@cassandrak7093]

So would another good example of potential energy be a sprinter in starting position? Then as he starts sprinting, all that potential energy converts into kinetic energy, right?

[@Airraca]

So potential energy is the object at rest and kinetic energy is the object in motion? (:

[@MrCap-ct9el]

If it's sliding is it potential or kinetic energy

[@SRT98K]

Thank you so much man, My freaking Vietnamese physics teacher such a bitch that doesn't even know how to teach, It help me a lot!!

[@jjsmboo]

Great Comparison, I teach ballet. I'm NOT a physicist, but I do need help, I have the students do beats with their legs closing front and back very very fast. I tell them they need to use the kinetic energy produced when they hit their thighs together they create the energy to rebound. Question, is this Kinetic or Momentum shift?

[@JimNagle87]

Awesome video, thank you so much!

[@peters840]

I dont know sht about this but this video helped thanks

[@soccerandtrack10]

other sciences are fun,space and earth science.

[@bluebgc.]

thanks my assignment is done yay

[@Em-ou3gi]

Got my AS Level Physics exam tomorrow morning, this helped a lot, thank you!

[@soccerandtrack10]

both serios and not.

[@fadhll]

this is so awesome !! thanks a lot

[@hanadsiciid1672]

Plz teacher, can you tell me where you get 9.0m|s

[@niicOlewasox]

physics exam tomorrow & chemistry exam on friday.. your videos helped me more in a day than my teacher did in a year.. THANK YOU SO MUCH.

[@robthatguyx]

What mistake am i making on the equation for potential energy i do 78*9.8*32 and end up getting 2.4460.8?

[@jareds8715]

Thank you SO MUCH

[@gur0004]

good stuff sir.

[@cainanedwards313]

my science teacher are science teacher write down under notes that how to do Connecticut and she and how to solve it any ideas put .5 times .03 kilograms times 400 meters per second squared and your video you did not put the .5 EE before your thing and so I'm trying to do my homework now really know how to do it so I was looking on KZbin and I I keep getting it wrong and I I don't know what I'm doing wrong but should I take out the .5 or what?

[@BaluchScientist]

Great , but how the potential energy is related to the work

[@chancesc6415]

maybe im multiplying wrong but i get 2397 joules for potential energy. how did you get 24485.16?

[@abdullahalrasheed6877]

Clear, simple, concise and to the point....very well explained and informative. Thank you

[@mihirpatel2440]

Excellent Video

[@kie3382]

How to solve the acceleration of potential energy by time?

[@wrenclark4907]

thanks!

[@cristhineg.5430]

tnxxx for your video clip about this topic,,,i really understand the difference between kinetic and potential energy,,,,,you are so bless of mine....and tnxxx also to this website youtube its really really helpful.....

[@ilonamasimova5181]

I feel so dumb I still don't understand and I have a test tomorrow :(

[@straightkbarajas9583]

Ilona Masimova your just stupid then

[@j_cranberry]

Blaze 1134 *You're. Who's the stupid one now? haha

[@TheAnushir]

Ya u r dumb

[@samjones7336]

Mood

[@naturedandelion4612]

me toooo :(

[@anonx3681]

So energy is not something tangible, but rather just a measurement?

[@pearspeedruns]

Hey I just wanted to thank you for your great videos. I skipped Physics 1 and went straight to AP Physics C and you've helped me cover everything I missed.

[@eugenecedricngoreyes]

Isn't the acceleration of gravity is 9.8m/s? or 9.81m/s?

[@danielmclay7523]

9.8m/s/s

[@d4nte568]

Daniel McLay More like 9.81 m/s^2

[@ImmiGaru96MuraSaki]

the exponent over the unit "s" is important

[@ImmiGaru96MuraSaki]

eugine's original comment just said m/s

[@Hellohimynameishatsunemiku]

Depends how specific it wants it. Some problems it want u to use 9.81 and others 9.8

[@abdulbusran9104]

Thank you bro☺

[@TheEliteDeity]

game?

[@YouTubebingewatcher]

you said -9.81m/s2, but the problem says 9.81m/s2 so wouldn't the answer be -24485.76 joules. im confused by what you said, is it a -9.81?

[@iskariotas]

Sarah Rivera It's negative because gravity accelerates towards the Earth, but if we are doing these problems, it's only natural to understand that you can't really have negative potential energy, you wouldn't be able to do a thing.

[@WreckingBallers]

Great video

[@musfirawaqar7390]

excellent concept

[@manojdookarun4646]

acceleration due to gravity we can use 10 m/s square

[@cuprite]

+manoj dookarun No, it's 9,81 m/s^2.

[@manojdookarun4646]

ok Thank you sir

[@shikkithefirst5393]

+trhj45uotsryegf4y5rstg We have tu use 9.813 m/s^2

[@ma.vhenienharizepantorilla7463]

how did you get the 10⁴ joules? I got confused

[@xtremedisintegrator7281]

great video, thanks. so easy

[@kingj7606]

Energy divided by time is the power

[@smallaluz]

Oh yeah yeah

[@busterkoala5906]

I can't remember why 11.3m/s is important. I read it somewhere in a physics book but can't remember what it was referring to. Would you have any idea why it is important?

[@Pri-tf9iv]

escape velocity!

[@irene.5798]

quarantine school gang

[@kiransunrays518]

❤️your videos.. you are awesome! Thank you🙏

[@noura3431]

Thank you very much :)

[@lukebfilms4232]

man this saved me

[@thomasnguyen7714]

sure

[@yamrajmishra9637]

thank you

[@hamdialsalhi2039]

I know that work=force×displacement Its not work = force×distance

[@tylerdurden4299]

This isn’t on the teas test

[@aswathyremon6214]

How is 100 mph = 45 m/s ??

[@annabelfisher1920]

Anyone else here cause you have a science quiz tomorrow and have no clue what the teacher has been saying for the past 2 weeks

[@Aareztariq]

Thanh but what is joules

[@BatusaiJack]

Very Helpful

[@SWEETSAPPHIRE70]

how did u get the 45 meters of weight?

[@yasmeenaraedeldilie1278]

he converted mph to m/s

[@arpitasaxena2077]

Potential energy depends upon height so how can the pendulum u holding has some potential energy

[@luisbrito2367]

Depends on distance from location. Gravity will pull it down but the string will keep it in a semi-orbit.

[@Merxifyful]

Thank you! I wish you were my college professor

[@binzayeduae9639]

THANKS ALOT !!!! saved my time of studying over 50 pages :D !

[@gatorades4gangsters]

Fantastic, fantastic, fantastic!! Clear and well thought out. Thanks a lot

[@cynthiasolomonimie6239]

Great!

[@zombieman6524]

how did he get the second answer 3:12

[@zombieman6524]

2.4 × 10 4 joules

[@Faz95]

Very helpful thanks ..

[@wgimpact4383]

im doing homework by watching youtube

[@twistedfirestarter8913]

Is there a hyper thetical version one for if the ball Straight down then hits left creating motion change the motion of the mass keeping momentum and then keeping it there by manipulation of the field.

[@twistedfirestarter8913]

Using gravity to keep something (mass) moving generating motion (kinetic) changing the flow in a ball like stucture (magnetism) of the field (gravity) to keep the flow. moving.

[@twistedfirestarter8913]

1 South + 1 West = 1 North continuous loop generated like muscle refex moving continues slows down by issue of friction unless the friction gets manipulated so that it moves continues.

[@JC-zl2dq]

May I ask how is squaring 9 get 5.9. It's suppose to get bigger?

[@Gallo_Inc]

He multiplied half of .145 by 9^9.This would make 81 much smaller.

[@MrFTW733]

Looks like Khan Academy has a competition.

[@anotherbtstrashthatloves3657]

Thanks for this sir! Not really for a subject just some self improvement. QUESTION: When I solved the 100 mph the result was, 146.8125 so, even with round up it should be 147, right? Which is contrary to yours. Why is that? I appreciate your help and attention. Thank you again!

[@haevans2]

love it

[@hibat9012]

I have a quiz tomorrow on this and I forgot my book in school, this helped me so much, THANK YOU!

[@rushikeshkhedkar989]

Loved it

[@raichu56k]

This is helpful for the basics but not very helpful for the harder problems I am currently stumped on

[@romeo6793]

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[@zeckelnabe5673]

thank you

[@roxannacamille35]

ahh how can i make 20 mph to 9.0m/s?and also 100 mph to 45 m/s?

[@grahamflowers]

There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers

[@robthatguyx]

Thanks,don't know how i didn't see that :)

[@Mabc91]

What do mean by -9.8ms2 isn't it just 9.8,

[@theblue3554]

joel campbell (-9.81m/s^2) negative because gravity accelerates downwards towards earth and squared because it's acceleration and not constant velocity

[@andrejohnson4699]

+Joel campbell The speed of gravity is 9.8 m/s, however velocity has a magnitude AND direction so that's why it's negative, it's showing that it goes downwards.

[@Mabc91]

k thanks

[@lily-xxx]

your 6 min video really helped me bc even though i listen in class and stuff when it comes to homework i usually use youtube to find easy and simple tutorials that will help me as I'm in year 9 and we are doing hard?easy stuff but yeah :))

[@casazj1]

Thx a lot ur a genius