Swinging arms while walking stabilizes torso, conserves energy, and enhances efficiency by utilizing angular momentum ...

Angular momentum is crucial to cosmic rotation ... If they do not collide or drift apart, they usually orbit each other. This principle applies to everything from minuscule mineral grains to ...

particles, systems of particles, and rigid bodies in planar motion; kinematics of points in rotating and non-rotating frames of reference in one, two, and three dimensions; conservation of momentum, ...