center of mass
centre of mass

Here the center of mass will only be found in the x direction.

The two orbit a common center of mass every 3.42 days.

This is due to the main gear being behind the center of mass.

In these cases, the forces acting on a body are assumed to act at the center of mass.

The distance from the center of mass at which you apply a force is called the moment arm.

This force acts at ground level, below the center of mass.

Once you have determined two such lines, the center of mass can only be at their intersection.

In such a universe, there is no center of mass.

"Take us out to seven hundred, between centers of mass."

However, an object is only in free fall at its exact center of mass.