Question

meaning of combination of rotation and rectlinermotion​

Answer 1

In 3D, equivalently it is the combination of a rotation and an inversion in a point on the axis. Therefore it is also called a rotoinversion or rotary inversion. ... The axis is called the rotation-reflection axis. This is called an n-fold improper rotation if the angle of rotation is 360°/n

Answer 2

Explanation:

An object having both rotational and rectilinear motion means that the object moves linearly but in such a manner that the object's axis of rotation remains unchanged. The most common example of combined rotational and rectilinear motion is a rolling wheel.