a force and inertia
Any object can be used as the reference. There's no such thing as an 'unmoving' object. It's only unmoving relative to itself or to other things that are moving exactly the same as the object. That's the whole reason that you need a reference point.
An object keeps moving once an applied force causes it to start moving because of inertia, which is the tendency of an object to resist changes in its motion.
In any field, stationary means unmoving and won't be moving.
An object at rest cannot start moving with no forces.
An external force, such as a push or a pull, can start a moving object by overcoming its inertia and setting it in motion. Once the object is in motion, it will continue moving until acted upon by another force.
Any object can be used as the reference. There's no such thing as an 'unmoving' object. It's only unmoving relative to itself or to other things that are moving exactly the same as the object. That's the whole reason that you need a reference point.
In relationship to most experiments and observations the Earth is considered an unmoving object. When looking at things in a larger scale, it moves.
Stationery, dull, fixed, permanent, unemotional, unmoving.
An object keeps moving once an applied force causes it to start moving because of inertia, which is the tendency of an object to resist changes in its motion.
In any field, stationary means unmoving and won't be moving.
An object at rest cannot start moving with no forces.
An external force, such as a push or a pull, can start a moving object by overcoming its inertia and setting it in motion. Once the object is in motion, it will continue moving until acted upon by another force.
An external force is needed to start an object moving. This can be applied through pushing, pulling, or some other method that imparts kinetic energy to the object.
Gravity
the speed of an object in a particular direction
Inertia
To make an object start moving, you need to apply a force to it. This is known as the principle of inertia, which is a fundamental concept in physics describing how an object at rest will remain at rest unless acted upon by an external force.