Question

1)what is a rotation?​

Answer 1

Answer:

A rotation is a circular movement of an object around a center (or point) of rotation. ... If the axis passes through the body's center of mass, the body is said to rotate upon itself, or spin.

Explanation:

Answer 2

Answer:

A rotation is a circular movement of an object around a center of rotation. A three-dimensional object can always be rotated about an infinite number of imaginary lines called rotation axes. If the axis passes through the body's center of mass, the body is said to rotate upon itself, or spin