The flight of a bird.
Projective motion is any motion defined in two dimensions. For example, if we mathematically project the three-dimensional path of a flying airplane onto a flat plane, the result is projective motion. The three-dimensional path was projected (thus the term) onto the flat plane..
gravity
Gravity
Gravity
Gravity
Projective motion is any motion defined in two dimensions. For example, if we mathematically project the three-dimensional path of a flying airplane onto a flat plane, the result is projective motion. The three-dimensional path was projected (thus the term) onto the flat plane..
A motion along straight line is called rectilinear motion. In general, it need not be one - dimensional; it can take place in a two dimensional plane or in three dimensional space. But, it is always possible that rectilinear motion be treated as one dimensional motion, by suitably orienting axes of the coordinate system.
square and triangle
A cube the simplest and oldest example of a three dimentional image
gravity
Gravity
projectile motion.two-dimensional motion.
Gravity
Gravity
Three-dimensional (what I think your talking about), is a shape with length with and height. Everything you touch and see is three-dimensional. Something two-dimensional is a shape like a square or a circle. An example of something three-dimensional is a cube, or a sphere. Something one-dimensional is just a straight line. This is difficult to explain, I'll look on my message board and this question's discussion page and answer any questions you have.
Harold Hotelling has written: 'Three-dimensional manifolds of states of motion'
Space is three dimensional, the three dimensions being length, width, and height. It is possible therefore to describe a motion in space in terms of a three dimensional coordinate system. However, motion also involves time, so you might want to consider a four dimensional system. That enables you to determine not only where something went, but also when, and how rapidly it went there.