His wedding ring is on his right hand. This is mirrored. Matt is writing on a "learning glass" that is streamed to a projector, reversing the image to allow his class to see his writing the correct way around. I had to watch this several times to get to the bottom of this before I could worry about learning the material.

The derivative dr/dt means the change in position with respect to time of the object at A. It is the velocity of the object at A (as measured in the stationary frame). We simply define this as v. Thanks for watching, Dr. A

Thank you soo much for this video! It was well explained. I have never taken physics before and as soon as I watched your video it became crystal clear.

Wonderful lecturer that makes physics fun and understandable !!!

We werent taught through the vector form :/ now it makes more sense ,Ty

How do you write backwards that fast??! Edit: your teaching is way better than my teacher's

Thank you very much sir for great 👍explanation.

medaaase paaa. meaning thanks so much in twi. 👍

Noixe

do you know serway?

It's awesome

Sir next video on Lorentz transformation

HOW ARE U WRITING IN THE OPPOSITE DIRECTION WITH THAT SPEED???

What about 2 moving objects? For example, 2 ships at sea on a potential collision couse (closest point of approach).

I bet i could do that all backwards too if i was a sinister physicist like him

how do you get dr/dt?

Physics is basic surrendings to us environmental aspected spiral to us

see i always thought they did these videos with the clear board normally and then just mirrored the video in the end. now there seems to be students in front of him and im just confused

Is this guy writing backwards?

Vo(t) = constant.

Galilean was great physician but not great physician imagination Sir Great Mr. Albert Einstein.