physicsmatterenergysciencespeedpropertiesstudynaturesourcetimedistancevelocityinteractionsbranchconcernedorgmechanicsaccelerationmotionelectricitylawstwogroupedtraditionalfieldsacousticsopticsthermodynamicselectromagnetismmodernextensionsthefreedictionaryinteractionnaturalforcesmovementthingsuniverseworldworksgoogletreatsheatlightmagnetismgeneralincludingatomicnuclearcryogenicssolid-stateparticleplasmadictionarymeasuredirectionrelationforceadlivingnonlivingdefineconstraintsdescribingphysics-thestudiesdefintionsanswersobjectsactingdepartmentgravitationmodifybodiesphilosophybrainyquotewordsphhtmllrlzgzmeylfwuysubjectdistinguishedchemistrybiologyincludesradiationsoundstructureatomsdealsmerriam-websteranalysisconductedorderunderstandbehavesenwikipediawikiphysics-physicalbehaviourcollinsdictionaryenglishwheelsrevelationsminutetorquewheelrotationsresistancemomentumcaraddtraveledweightelectricalpower