Which of the following is an example of rectilinear motion? 

Different objects show different types of motion. The four important types of motion are: Rectilinear motion, Circular motion, Rotational motion, and Periodic motion.

When an object moves along a straight line path, it is known as rectilinear motion.

Examples:

• The motion of a bullock cart moving on a straight road
• March past of soldiers in a parade.

The motion of the pendulum of a pendulum clock and the motion of a swing are examples of periodic motion.

The motion of the hand of a clock is an example of rotational motion.