Consider an inertial reference frame.
In this coordinate system
no question.
In an inertial reference frame, the laws of physics hold true without any acceleration or rotation. Essentially, it is a coordinate system where an object at rest remains at rest, and an object in motion continues to move in a straight line at a constant speed unless acted upon by an external force.
To establish an inertial reference frame, you would need to follow these steps:
1. Choose an origin: Select a fixed point as the reference point (origin) in the coordinate system from where you will measure distances.
2. Define axes: Establish three perpendicular axes (x, y, and z), which will determine the directions in which measurements are made. The positive direction is typically chosen along the right-hand rule, where the x-axis points to the right, the y-axis points upwards, and the z-axis points towards the observer.
3. Set up standard units: Assign standard units of measurement to each axis, such as meters, seconds, etc., which will be used to express the quantities being measured.
4. Establish the principle of relativity: In an inertial reference frame, the laws of physics remain the same for all observers who are moving relative to each other at a constant velocity. This means that the physical laws will be unaffected when you switch between different inertial reference frames.
Once you have set up an inertial reference frame, you can use it to describe the motion of objects and analyze physical phenomena based on the coordinates and laws of physics.