Physics Lesson: Kinematics Acceleration Equations Part 2 for High School

[AnthBalce]

stress to cram  is taken away with every video :)

[xXroxasuzumakiXx]

You guys are awesome. Thanks so much for taking the time to do these videos. :D

[DannTheMan2010]

In my School In Scotland they only teach 3 equations of motion, do you think there's a reason for that?

Great video btw.

[Gutsyndicate]

@DannTheMan2010 because in Scotland you live in one dimensional world, time and velocity doesn't are relative

[Emin3m802]

@Gutsyndicate Where does he get 3.6 from?????? And how does he know V1 is 100km/h???

[Gutsyndicate]

@Emin3m802 well, they already give us that the car was going 100km/h so that is the car's initial velocity or v1. and he just converted the 100km/h to m/s by multiplying 3600 seconds and dividing 1000 meters, which is 3600s/1000m = 3.6

[Emin3m802]

@Gutsyndicate Where did you get 3600? Is 3600 the meters converted to 100km/h? Cause when i convert 100km/h to m/s i get 100,000?

[Gutsyndicate]

@Emin3m802 the conversion unites are 1-hour = 3600 seconds. 1km = 1000 meters.

I can't be more specific.

[tiffanyfujiwaraciel]

This was so helpful. I think I can face my kinematics test tmrw with more confidence now :) thank you so much!

[DreadedLeopard]

Wish I had teachers like you I have a fucking stupid teacher at my school. Many thanks man.

[PhysicsEH]

@DreadedLeopard Sorry to hear that. Glad we could at least help.

[schrier3095]

can you please work at my school? this was so helpful.

[PhysicsEH]

@schrier3095 Glad we could help

[brownsheep1990]

i wish you were teaching the physics class i was taking. I dont know why my teacher makes it so hard to understand simple ideas

[PhysicsEH]

@brownsheep1990 Sorry to hear that.Glad we could help

[beebee002]

You saved my Life...honestly

[PhysicsEH]

@beebee002 Thanks for the comment. Glad we could help.

[AikoKayo]

Why can't it be a negative acceleration. The car is stopping. Its deceleration. It makes perfect sense to have a negative. Doesn't it

[PhysicsEH]

@AikoKayo The car was decelerating but we try not to use that word because it does not always work. Since the car was slowing down it was "decelerating" which in this case means negative acceleration. The negative is a direction indicator and it tells us the acceleration is backwards. Its better to say accelerating backwards than to say "decelerating" but in truth they are the same thing for this problem but as the problems get more complicated it will not work. Hope this helps.

[AikoKayo]

Why can't it be a negative acceleration. The car is stopping. Its deceleration. It makes perfect sense to have a negative. Doesn't it

[hershey976]

i want to thank you. not because you are smarter than my phyrics teacher at phyrics, but beacuse you understand teen language vs. uber duber over my head smart guy who speaks in huge words ive never heard of before :]

[PhysicsEH]

@hershey976 Thanks for the great comment. Glad to help.

[PhysicsEH]

@hershey976 Thanks for the great comment. Glad to help.

[Sadena123]

Phisics made no sense to me until now. In class we use Vf and Vi and your use of V1 and V2 really simplified things and made it easier to see. Thank you

[PhysicsEH]

@Sadena123 Hi. Thanks for letting us know we helped.

[dhaccessories]

You are amazing!!

[yman891]

wow I actually have a chance at passing my physics exam now, thanks for the videos

[PhysicsEH]

@HerlockSholmes123 All the formulas require that you use m/s for the speed and not km/h. In order to change km/h to m/s you must divide by 3.6. I hope that helps.

[HAkram855]

@PhysicsEH shuldnt u have multiplied 100 by 3.6 to obtain m/s from km/h? im srry but thats how we were taught in skool. :p

[HAkram855]

oh, wait nevermind, my mistake :P

[PhysicsEH]

@HAkram855 Hi. To go from m/s to km/h you multiply by 3.6. We want to go the other way and change km/h to m/s so you must divide by 3.6 I hope this clears it up. Thanks

[sample0nly]

Your beard <3

[djwestbrook36]

the beard is still mighty impressive.

[princesslilbing]

Your so freakin awesome. You explain this wayyyyyy better then my teacher

[PhysicsEH]

@princesslilbing Thanks for the great comment. Glad to help.

[myseacret20]

could the backward acceleration also be knowen as deceleration because i dont hing my markers would aprove of that awnser for ncea level1

[PhysicsEH]

@myseacret20 We avoid using the term deceleration because it is used to describe acceleration that is backwards (-) and everyone interprets "deceleration" as meaning getting slower. Negative acceleration means slowing down only if you are going forward. If you are going backward (-Velocity) and have negative acceleration, you are actually getting faster. This makes it confusing to say that you are going backward and decelerating but in reality speeding up.

[ascortjkk]

I dont understand why u have so little views. no wonder the world is failing hahah XD

[lalkhan001]

Thanks alot

[Str33tFiGhTeR1]

u are a freakin genius man!!!!

[PhysicsEH]

@Str33tFiGhTeR1 This comment makes it all worthwhile. Thanks for the encouragement!

[flamingfigures]

heh, oddly enough I can only ever find these sorts of videos for subjects I like and I'm good with (Chem/Physics). My last math teacher was horrible (constantly screaming at students, getting lost when teaching and going completely off topic) and I would love to find some good math lessons online to recap before next year... or even an online textbook or something =/ *keeps reviewing physics while searching*

[PhysicsEH]

@flamingfigures Hi. At least you're good at physics (my favorite subject) Good luck in finding the math videos. Enjoy the review and thanks for the note.

[Shifta1V]

You have saved me and your turorial are amazing thank you so much..