Give two examples for each of …

i. Rectilinear motion: This type of motion is a straight line motion. Rectilinear motion takes place in a fixed direction. Examples of rectilinear motion: a. The movement of a bullet fired from a gun. b. The march-past of soldiers in a parade. ii. Circular motion: A path having the shape of a circle is called circular path. When an object moves along a circular path, it is called circular motion. Examples of circular motion: a. The movement of moon around the earth. b. Movement of artificial satellites around the earth. iii. Periodic motion: Periodic motion is the motion which repeats itself after regular intervals of time. Examples of periodic motion: a. The motion of seconds’ hand of a watch. b. The revolution of earth around the sun. iv. Rotational motion: When an object turns or spins about a fixed axis, it is called rotational motion. Examples of rotational motion: i. The motion of a spinning top. ii. The spinning of earth on its axis.