we may have derived the special equation from using KE, but we are working with momentum and must maintain the vector nature. Forgetting (+) and (-) is the number one reason students miss points on these. I would teach you to always use your signs and in the advent of it being a scalar like work or energy, then it would eventually square itself out and become positive through calculations.

Normally physics/chem people aren't known for the quality of their jokes, but if your expectations are low, then maybe I won't let you down :)

You are welcome, and it's very hard to hide an Alabama accent lol.

2 weeks late. Sorry I've been working at another university and just returning to normal life. And sorry, I have no social feeds to receive photos, but links in comments were always available.

@@turdfurg67 got it thanks

I need help with this please, the question has a diagram as well, if there is anyother way to send it to u i wud be glad to do so

thanks for commenting, if you have ideas for videos, just post them here, although my surface pen just died so it'll be a few days for a replacement.

@@turdfurg67 got it !! Thanks alot

Greatest Orator of All Time? GOoat...

glad to see people still reading calipers. Thanks for commenting.

all physics is funny. see it the right way and it's super easy. Glad it help :)

Thank you so much :)

in the back ground i'm hearing the eighties song "i need a hero" playing. No joke i'm about to youtube it now lol. glad it helped.

That was a user requested once. You don't see it often. Glad it helped.

think of it as a number line. since this is one dimensional the 8 ball is going in the chosen negative direction.

Thanks. I actually thought this was a good series I put together for an APC group but hasn't had many views. Again, many thanks.

Another victory! I'm glad it helped.

Whenever you do one of these, it's usually best to take the difference of the two torques so that you end up with a positive value for your angular acceleration. Here is a newer version of this video that does a better job explaining it kzbin.info/www/bejne/l2iZc2OfbtxgitEsi=1-hNNVnW-svD1_KQ

Even better than Taylor Swift? :)

I'm just happy to help. Keep Learning!

I'm not sure how nice or nice looking I may be, but thank you so much for your exceeding kindness. Thank You :)

And I take requests lol. I'm glad it helped!

Kinda wish I would have taught it a little different now, but I'm glad it saved a life lol.

you're welcome and your teacher is ice cold. I don't because it makes no difference in the formula. I would argue with my teacher that the dimensional analysis still works, so I should not be deducted. Since the equation is basically mv=mv, then its basically a glorified proportion, so the units come out in the wash (excuse my alabama slang). If I was solving a problem of a Hydrogen nucleus, then I sure would not want to use 1.67 x 10^-27 kg, I would use 1 amu. If it hit helium then m1= 1 amu and m2=4amu. Mean teachers man, stop making physics ugly... That would be a good t-shirt.

Glad I helped. Sounds like you had a pretty special teacher in 7th grade. If we find one teacher that actually cares if we learn or not, then we've done pretty good. The "good ones" always want you to come where they are, so that you may go further. Glad you passed. Now go be amazing!

Glad to help :)

thank you for commenting. :)

it's funny now because these were mainly made for absent students and 12 years ago there was not a better way of sharing. Thanks for watching and commenting!

you're welcome from tudfurg :)

Mr Turdfurg67....That's my fathers name. You can just call me turd lol

I'd help but I'm 2 months behind checking comments. sorry.