Define the term motion and explain the different types of motion.

Explanation

An object is said to be in motion if it changes its position with respect to its surroundings with the passage of time.
(i) Linear motion
An object is said to be linear motion if it moves in a straight line.
Example : An athlete running on a straight track.
(ii) Circular motion
Circular motion is defind as a motion described by an object traversing a circular path.
Example : The whirling motion of a stone attached to a string.
(iii) Rotational motion
If any object moves in a rotational motion about an axis, the motion is called 'rotation'.
Example : Spinning of the Earth about its own axis.
(iv) Vibratory motion
If an object or particle executes a to - and - from motion about a fixed point, it is said to be in vibratory motion.
Example : Vibration of a string on a guitar.