Classify the following as motion along a straight line, circular or oscillatory motion: 

(i) Motion of your hands while running. 

(ii) Motion of a horse pulling a cart on a straight road. 

(iii) Motion of a child in a merry-go-round. 

(iv) Motion of a child on a see-saw. 

(v) Motion of the hammer of an electric bell. 

(vi) Motion of a train on a straight bridge.

Motion is the change in position of an object with respect to time. There are three types of motion. They are:

a) Straight line motion - It is a type of motion in which the object moves from one point to another in a straight line.

    For example: Vehicles moving on a straight road

b) Oscillatory motion - It is a type of motion in which the object moves to and fro repeatedly about a mean or a fixed position.

    For example: Movement of the pendulum of a clock

c) Circular motion - It is a type of motion in which the object moves along a circular path. 

    For example: Motion of a wheel