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when net force acting on a body is zero this means momentum is constant.if momentum is constant then velocity of a body has to be constant this implies kinetic energt to be constant? is it true what i m thinking?  
Asked by sudhanshushrotriya52 | 06 May, 2019, 15:44: PM
answered-by-expert Expert Answer
When the net external force acting on a system or body is zero then the body moves with constant velocity and hence momentum of system remains constant. As the body is moving with constant velocity the kinetic energy will remain same.
Answered by Utkarsh Lokhande | 07 May, 2019, 12:11: PM

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