In this article we are going to discuss the motion in different dimensions.
Motion in one dimension
An object moving along a straight line or path is said to have one-dimensional motion.
Suppose an object moves in a particular direction then its position at any time can be described by knowing its distance from the starting point of the motion. It means, only one position coordinate (say, x) is required to describe the position of the object in one dimensional motion.
Example: Motion of a bus on a straight road and motion of a train on a straight track, an object dropped from a certain height above the ground etc.
Motion in two dimensions
If two of the three co-ordinates specifying the position of object changes w.r.t. time, then the motion of object is called two dimensional. In such a motion the object moves in a plane.
Example:
An insect crawling on the floor of the room, motion of object in horizontal and vertical circles etc., motion of planets around the sun, a car moving along a zig-zag path on a level road.
Motion in three dimensions
If all the three co-ordinates specifying the position of object changes w.r.t. time, then the motion of object is called three dimensional. In such a motion the object moves in a space.
Example:
An insect flying in the room, random motion of gas molecules, motion of a helicopter in sky.
Related Physics Articles:
-
Failure of Classical Wave Theory
Failure of Classical Wave Theory According to wave theory, light is an electro-magnetic wave consisting of electric and magnetic fields with continuous distribution of energy over the region over which the wave extends. This wave picture of light could not explain the basic features of light as explained below. According to the wave theory, when…
-
Laws of Photoelectric Emission
On the basis of the experimental results on photoelectric effect, Lenard and Millikan gave the following laws of photoelectric emission: For a given photosensitive material and frequency of incident radiation, (above the threshold frequency), the photoelectric current is directly proportional to the intensity of light. The saturation current is directly proportional to the intensity of…
-
Electron Emission
What is electron emission? The phenomenon of emission of electrons from a metal surface is called electron emission. Different methods of electron emission For the emission of electrons from the metal surface, the energy of electrons must be higher than the work function of the metal. For their release from the metal surface, the electrons…