* Nothing moves unless you push it. * Heavier things fall faster, proportional to their weight. * The speed of fall of a given object depends inversely on the density of what it is falling through.
Frame of reference
Motion is relative. That's because you can't define motion because it's relative to the observer's point of view. :D Oh & you have to have a reference frame b/c you can't answer, "are you moving?" It has to be "are you moving compared to ______."
One point of view from which to describe motion is the observer's frame of reference. This point of view defines the position and motion of an object relative to the observer. By choosing a specific frame of reference, we can describe how an object moves in relation to that reference point.
Whether the object is moving from left to right across the field of view, or from right to left.
Aristotal view on Revolution
Epicycles
A few of the celestial bodies appear to have a retrograde motion.
Copernicus believed the planetary motions were due to:
Natural motion and Violent motion
By observing the object
me
pythias
philosophing
My view and understanding of motion was founded by Dr. Everett Mark Hafnerat the University of Rochester. It was a hot topic at that time, as motion hadjust been invented not too much earlier.
Relative motion is : The comparison of motion between two different objects from the view of another object
Nichomachus...