Relative Motion 

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.

Wonderful lecturer that makes physics fun and understandable !!!

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.

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

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).

Thank you very much sir for great 👍explanation.

medaaase paaa. meaning thanks so much in twi. 👍

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

It's awesome

do you know serway?

Sir next video on Lorentz transformation

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

Noixe

how do you get dr/dt?

Is this guy writing backwards?

Physics is basic surrendings to us environmental aspected spiral to us

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

Vo(t) = constant.