# What is motion with its types

Motion can be defined as the change in position of an object with respect to its surroundings in a given interval of time. Motion can be seen in each and every activity of our life.  In other words, whenever a body is moving, we say it is in motion. For example, if a boy is walking down the street from his school to his home, we will say that the boy is in motion.

### Types of motion

According to the nature of the movement, motion is classified into the following types

• Translational – In this type of motion an object moves along a path in any of the three dimensions.
• Rotational – In this type of motion an object moves along a circular path about a fixed axis.
• Linear – It is a type of translational motion where the body moves in a unique direction along a single dimension.
• Periodic – It is the type of motion that repeats itself after regular intervals of time
• Simple Harmonic – It is the type of motion like that of a simple pendulum where a restoring force acts in the direction opposite to the direction of motion of the object.
• Projectile – In this type of motion, it has a horizontal displacement as well as vertical displacement.
• Oscillatory – The motion which is repetitive in nature within a time frame. If it is mechanical in nature it is called vibration.