center of mass

When a skateboarder hits the circular section of the half-pipe, they start crouched down, positioning their center of mass further from the center of rotation above their head.

The model represents a runner as a center of mass, with a hip that can rotate and a leg that can stretch.

Eventually, when its nuclear batteries run out of juice for good, it will continue to quietly orbit the center of mass of the Milky Way for eternity.

ALMATY, Kazakhstan — One evening in early January, Yerlan Zhagiparov left his home to see what was happening nearby at the city’s Republic Square, a center of mass political protests.

The objects might zoom by each other, or they might enter into an elliptical orbit around a shared center of mass.