Explain translational motion by given illustration.

Explanation

A rectangular block sliding down an inclined plane without any sidewise movement as shown in figure.
Its motion down the plane is such that all the particles of the body are moving together. Means they have the same velocity at any instant of time.
Such motion of rigid body is in pure translational motion.
In pure translational motion at any instant of time all particles of the body have the same velocity at any instant of time.
Such motion of rigid body is in pure translational motion.
In pure translational motio at any instant of time all particles of the body have the same velocity.