Classification of motion:
The motion of objects can be classified depending on the way they move. the types of motion are :-
i) Rectilinear motion:
An object is said to have rectilinear motion if it moves from one point to another in a straight line.
eg :- very common example of rectilinear motion is the motion of a moving car on a straight road.
ii)Circular motion:
An object is said to possess circular motion if it moves from one point to another in such a way that its distance from a fixed point always remains constant.
example of this type of motion is the movement of the blades of a fan. During their motion, the blades move from one point to another, but the distance between them and the head of the fan remains the same.
iii)Periodic motion:
An object is said to possess periodic motion if it moves in such a way that it repeats its motion after a certain interval of time.
Other examples of periodic motion are the motion of a swing, the motion of a guitar string, the motion of the head of a drum, etc.
iv) Rotational motion:
An object is said to possess rotational motion if it whirls around a fixed axis that passes through it.