KINEMATICS
Kinematics is the study of motion without respect to the forces that caused it.
CONTENTS
- Single Dimensional Motion
- Position
- Velocity
- Acceleration
- Jerk
We don't actually know. We think we know the history of the universe quite well, but not where it came from. The farthest we can see back is the Planck Time.
We know that very early on there was an "inflation." Our best analog is an explosion, but one that happens everywhere in space at once. And because this is an explosion not "in" space, but "of" space, the universe's center is everywhere and its edge is too. Our observations really are purely about "space" in the cosmic sense and in the mathematical sense. How far apart is everything in the universe apart from everything else, and how did it get there? With that, we can hopefully tell where it's going.
We know a lot actually. We know how radiation, conduction, convection, cooling, deceleration, collision, electromagnetic force, strong and weak forces, and gravity all work. However, we just don't know how they work together. There are many major unsolved problems regarding the history and makeup of our universe, and that is what physicists are on a quest to discover.
We know that Dark Energy, or at least something exists which cause these two distinct observations:
That on the one hand our rate of expansion did not decay steadily from its post-inflation peak as predicted, but rather, after slowing down in our expansion after inflation for 10 billion years, we started accelerating in our rate of expansion once more. Asecond acceleration with several theorized - but no proven - causes.
.We know that Dark Matter, or at least something exists which cause these two distinct observations:
That on the one hand the galaxies spin much faster than they should be able to without being thrown apart, and the gravitation associated with the visible matter in galaxies is nowhere nearly enough to hold them in. But that's what gravity does, and it does so exactly the same way everywhere in the universe. So there must be more "stuff" there that we can't see. In fact, Dark Energy and Dark Matter together make up over 95% of the universe. Everything we can see and know about makes up just the leftover 5%.
No, they're actually transparent.
We don't.
Many theories persist. None are proven.
The beginnings and origins of the four basic domains of physics.
The four domains are broken up by fast and slow, and small and large.
Electricity, Magnetism, Heat, Cold, Chaos, Entropy, Optics, Quantum Mechanics, General Relativity
These sound hard but we are here to make it easy.
Requirements
- There are no requirements for this class. This is where we start.
Features
- Micro-Topics
- In-Situ Practice
- Students of all ages may start at any level they wish.
Target audiences
- Everyone.