If we consider a hypothetical scenario where the Earth is a perfectly smooth sphere with no irregularities such as mountains, valleys, or oceanic features, then the Earth would not experience any net movement in the absence of external forces.
In reality, the Earth is not a perfectly smooth sphere. It has various surface features like mountains, oceans, and continental land masses. Additionally, the Earth is subject to forces such as gravitational interactions with the Moon and the Sun, as well as other celestial bodies.
These forces, along with factors like plate tectonics, atmospheric circulation, and ocean currents, contribute to the continuous motion of the Earth. For example, the rotation of the Earth on its axis causes day and night, while its revolution around the Sun leads to the changing seasons.
In summary, if the Earth were a perfectly smooth sphere without any external forces acting upon it, it would remain stationary. However, due to the real-world factors and forces affecting the Earth, it is in a state of constant motion.