Question

Comment on the statement 'rest and motion are relative terms'. Give an example.

Answer 1

Mechanics is the general study of the connection between motion, force, and energy. Kinematics, dynamics, and statics are the three components of the subject. Kinematics is concerned with the study of object motion without taking into consideration the forces and energy that may be present. The first thing we must understand is that neither absolute stillness nor absolute motion exist.

Complete step by step solution:
The phrases "rest" and "motion" are used interchangeably. In basic words, an object in motion is one that varies its location, whereas an item at rest is one that does not. Perspective, on the other hand, is quite important. Consider an atom, which is continually in motion yet appears to be at rest when we view it in the macroscopic. As a result, both rest and motion are primarily determined by the observer's frame of reference.
We know that if a body's position changes with regard to time, it is considered to be in motion to the observer. Similarly, if the position of the remains is fixed with regard to time, the body is considered to be at rest to the observer.
Assume you're on the interior of a moving bus. You will see that you are moving if you glance outdoors. Now turn your attention to the bus's roof. You are at ease in relation to the bus's roof. As a result, the terms "rest" and "motion" are defined as relative concepts.

Note:
The condition of the body is determined by the observer's position, time, and location. As a result, while describing the nature of motion of any body, we must additionally consider the observer's location. The same body may appear to be in distinct states of motion or rest to different observers.