Want this question answered?
Inertia is an object's resistance to change it's state of motion or rest. Motion or rest depends on the observer's frame of reference.
Doppler effect.
Its size is not affected in the least by its distance from an observer. If it were, can you possibly imagine thestress and strain on Brett Favre's body during a game, as he is watched by 60,000 people in the stands, allat different distances from him ? ! ?The object's APPARENT size ... i.e. the angle that it subtends at the eye of the observer ... depends onthe observer's distance from it, in the following totally predictable and purely geometrical fashion:The angle subtended by the object =arctangent [ (object's dimension perpendicular to the line of sight) divided by (observer's distance) ].But that's the observer's fault, not the object's.
Relative or apparent motion.
There are three things that motion depends upon. The first is the mass of the object that is to be set into motion. The second is the strength of the friction that is going up against the object. The third is the strength of the gravity that is pulling upon the object.
Parallax, more accurately motion parallax, is the change of angular position of two observations of a single object relative to each other as seen by an observer, caused by the motion of the observer. Simply put, it is the apparent shift of an object against a fixed background that is caused by a change in the observer's position.
Accelerates the motion of an object.
Observer.
Yes, it all depends on the point of view. An object can be at rest for one observer, and in uniform motion for a different observer.
I guess that would be an earthquake. But what do I know. I think it is though.
Inertia is an object's resistance to change it's state of motion or rest. Motion or rest depends on the observer's frame of reference.
Its velocity and its mass.
Doppler effect.
Two things can cause red-shift:- The rapid motion of an object away from the observer. This is known as the Doppler-effect.- Expansion of space between the object and the observer.
Its size is not affected in the least by its distance from an observer. If it were, can you possibly imagine thestress and strain on Brett Favre's body during a game, as he is watched by 60,000 people in the stands, allat different distances from him ? ! ?The object's APPARENT size ... i.e. the angle that it subtends at the eye of the observer ... depends onthe observer's distance from it, in the following totally predictable and purely geometrical fashion:The angle subtended by the object =arctangent [ (object's dimension perpendicular to the line of sight) divided by (observer's distance) ].But that's the observer's fault, not the object's.
yes
Relative or apparent motion.