Discuss the earth's ocean tides in terms of non-inertial reference frames along with gravitational effects on earth as a whole as well as on individual volumes of water within the world's oceans. Keep in mind that the earth is rotating on its axis, so the ocean waters are not moving at the same velocity as the center of mass of the planet. Also consider that because of the moon, the earth's center of mass is constantly accelerating toward the moon. Start with these facts and do the mathematics to support your discussion and conclusion on what the shape of earth's tides are (and why)