EntityQ3108904· pop 7· linked from 32 articlesslidingSign in to saverelative motion of two surfaces in contact or separated by a thin film of fluidConnectionsNewton's laws of motionEntityfrictionEntityIsaac NewtonPersonGalileo GalileiEntitytimeEntityenergyEntityLeonhard EulerEntityJohannes KeplerEntityforceEntitymassEntityInternational Standard Book NumberEntityvelocityEntityaccelerationEntityclassical mechanicsEntityPierre-Simon LaplaceEntityJohn von NeumannEntitymotionEntityChristiaan HuygensEntityspaceEntityJean Le Rond d'AlembertEntityCategoriesClassical mechanics