Physics 10 - Lecture 03: Gravity and Satellites

This is a university lecture? Seriously?

Why do you ask may I ask?

Actually I take that back, he's a good teacher, and it seems like a great course. I was just thrown off by the hole rounding -9.8 m/s2 thing. Also how he said Gq1q2/r2 isnt important (basically). Those are all things that are pretty basic in Grade 12 physics... But anyway, my mistake.

btw, turn to christ? how about no...

he put it in mph so that the students could relate to it.
and isnt the reason if u shoot that water into the air it uses all of its velocity to go up and once it uses its velocity gravity takes affect and pulls the water back down

I want to clarify the difference between military and civilian GPS is because since the GPS system was developed by the military, they put in a system where they can scramble the system or give false data which the military GPS can decode. Now so many commercial airlines and civilian org. use the GPS they won't do this in practice. That is the difference. Not because a tank can drive over it...... (Source: Military service and experience with PLGR)

since satellites are constantly falling are they constantly accelerating?

@Budman4life They are accelerating which does change their trajectory (causing the satellites to stay in orbit and not fly off into space), but I think relative to the ground they do not increase in velocity.

Yes, but in constantly changing direction.
Imagine a X,Y diagram with vertical and horizontal velocity along its axis. Put an object in this system with a pre-defined total velocity of 100(whatever unit you like).
If velocity straight up along the Y axis=100, and you make the objects path curve to run parallel to the X axis, the object has accelerated along the X axis, without changing it's total velocity.
Acceleration is change in velocity OR DIRECTION