Which of the following explains why the Earth orbits the sun rather than the sun orbiting the Earth?
A. The force of Earth's gravity pulling on the sun has a smaller
magnitude than the force of the sun pulling on the Earth.
B. Even though the sun is pulled toward the Earth, the force is
opposed by forces from the gravity of the other planets.
C. While the Earth is pulled toward the sun with a gravitational force,
the sun is not pulled toward the Earth by a gravitational force.
D. Earth has a much smaller mass, so the gravitational force
accelerates the Earth much more than it accelerates the sun.

Answer: buoyancy forceexplanation: in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.