Rolling resistance
FORCE RESISTING THE MOTION WHEN A BODY (SUCH AS A BALL, TIRE, OR WHEEL) ROLLS ON A SURFACE
Rolling friction; Rolling Coefficient; Rolling Coefficient of friction; Rolling resistance coefficient; Coefficient of Rolling Friction; Rolling coefficient; Rolling Resistance; Crr; Coefficient of rolling friction; Vehicle resistance; Roll resistance
Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation (or movement) of the wheel, roadbed, etc.