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Kinetic Energy - HyperPhysics Concepts

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Kinetic energy is an expression of the fact that a moving object can do work on anything it hits; it quantifies the amount of work the object could do as a ... KineticEnergy Kineticenergyisenergyofmotion.TheSIunitforenergyisthejoule=newtonxmeterinaccordancewiththebasicdefinitionofenergyasthecapacityfordoingwork.Thekineticenergyofanobjectistheenergyitpossessesbecauseofitsmotion.Thekineticenergy*ofapointmassmisgivenby Kineticenergyisanexpressionofthefactthatamovingobjectcandoworkonanythingithits;itquantifiestheamountofworktheobjectcoulddoasaresultofitsmotion.Thetotalmechanicalenergyofanobjectisthesumofitskineticenergyandpotentialenergy.Thetotalenergyofanisolatedsystemissubjecttotheconservationofenergyprinciple. Foranobjectoffinitesize,thiskineticenergyiscalledthetranslationalkineticenergyofthemasstodistinguishitfromanyrotationalkineticenergyitmightpossess-thetotalkineticenergyofamasscanbeexpressedasthesumofthetranslationalkineticenergyofitscenterofmassplusthekineticenergyofrotationaboutitscenterofmass. *Thisassumesthatthespeedismuchlessthanthespeedoflight.Ifthespeediscomparablewithcthentherelativistickineticenergyexpressionmustbeused Developmentofthekineticenergyconcept IndexEnergyconcepts  HyperPhysics*****MechanicsRNave GoBack KineticEnergyConcept Kineticenergyisenergyofmotion.Thekineticenergyofanobjectistheenergyitpossessesbecauseofitsmotion.Thekineticenergyofapointmassmisgivenby Moredetailonthisdevelopment Energyasthecapacityfordoingworkisaconvertiblecurrency.Togivesomethingkineticenergyyoumustdoworkonit.ThisdevelopmentusestheconceptofworkaswellasNewton'ssecondlawandthemotionequations.Itisaspecialcaseofthework-energyprinciple,apowerfulgeneralprincipleofnature. IndexEnergyconcepts  HyperPhysics*****MechanicsRNave GoBack MoreDetailonKineticEnergyConcept Kineticenergyisenergyofmotion.Thekineticenergyofanobjectistheenergyitpossessesbecauseofitsmotion.Thekineticenergyofapointmassmisgivenby Conceptsinvolvedinrelatingnetworktochangeinkineticenergy: Newton's2ndLaw:F=maAccelerationAveragevelocity Work-energyprincipleWorkMotionequations IndexEnergyconcepts  HyperPhysics*****MechanicsRNave GoBack

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