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Where m is the mass of the object ;It is most dense at its centre and least dense at its surface An approximation of its density is ρ(r)=(A−Br), where A= kg/m3,B =150×10−3kg/m3 and r isKinetic energy kinetic energy of an object is the energy that it possesses due to its motion It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity transfer of gravitational potential energy when the energy from lifting an object is changed into kinetic, thermal or sound energy Kinetic And Potential Energy Energy Conversions What are 3 examples of gravitational potential energy