First off, let's hear some nice music:

**"Constant Acceleration," by Walter F. Smith**## So a short summary on magnetism...

- Kinematics is essentially the description of how objects move relative to a particular reference frame. The displacement of an object is literally its change in position from the origin.
- For the most part, kinematics deal with speed, the magnitude of the distance traveled in a time interval, or velocity, the speed in a certain direction, as well as acceleration, which is the change in velocity over time.
- All these can be divided into instantaneous and average speed/velocity/acceleration, where instantaneous speed/velocity/acceleration is the speed/velocity/acceleration at a given time, and average speed/velocity/acceleration is the speed/velocity/acceleration over a given time period.
- Gravity is just the force that makes things fall. All objects experience a downward acceleration of 9.80665 m/s^2, a value commonly known as the gravitational acceleration, or
*g*. - When moving objects are moving on a moving planes or in relation to other moving objects, this is known as relative motion. Relative velocities of two objects typically add or subtract to each other, like vector quantities.

Vocabulary

**Kinematics**- Description of how objects move

**Distance -**The magnitude of the interval between two points.

**Displacement**- Change in position

**Average Speed**- Distance traveled in a given time

**Average Velocity**- Average speed with direction

**Instantaneous Velocity**- Velocity at a specific time

**Average Acceleration**- Change in speed in a given time

**Instantaneous Acceleration**- Acceleration at a specific time

**Gravitational Acceleration**- Acceleration due to gravity ( 9.80665 m/s^2)

**Relative Motion**- Velocity of moving objects with respect to other stationary or moving objects

Main Equations

When we combine these, we get:

*Where

*d*= displacement (m),*v*= velocity (m/s),*a*= acceleration (m/s^2), and*t*= time (s)And here we have the complete, long, tedious process for obtaining these equations:

A short, interactive video summary of all this is available at: http://www.curriki.org/nroc/Introductory_Physics_1/lesson01/Container.html

Completely unrelated... but nice song.. =D

"Memories," by Tasha

English Ver.

Korean Ver.