---
title: Vectors and Kinematics
date: 2024-08-19
---
> One must always start a study into the heavily crippled IB editions of the glorious subject of Physics with the initial understanding that the road ahead lead to pain immeasurable.
>
> -> Prime of the Faith


# Motion in 1D 
In this rendering of motion, you will *never* need to use vector quantities to describe movement due to the scalar nature of all quantities discussed.
## Reference Frames and Displacement
- Any measurement about motion is taken in terms of a *reference frame*.
> [!NOTE]
> **Example:** A train that moves with respect to the ground being held stationary, is not moving with respect to a stationary person inside that train. If a person were to walk, at let's say $5$ km/s toward the back of the train while it moves forward at $80$ km/h, the person is moving at $75$ km/h with respect to the stationary ground.
- In one dimension, only one axis, the $x$-axis of a coordinate plane is used.
- the *net* distance an object has traveled is known as *displacement*
- *total distance* is the overall distance traveled by the object/particle regardless of reference frame or initial/final positions
- change in positions is described using $\Delta x$

#physics