Internal forces can change

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Question

(B) According to Newton's second law,the rate of change of linear momentum of a system is equal to the net external force acting on it $(F_{ext} = dp/

Vedclass · Accepted Answer

the kinetic energy but not the linear momentum of the system

Vedclass · Answer

(B) According to Newton's second law,the rate of change of linear momentum of a system is equal to the net external force acting on it $(F_{ext} = dp/dt)$. Therefore,internal forces cannot change the total linear momentum of a system.However,internal forces can do work on the particles of a system,which can change the internal configuration or the relative velocities of the particles,thereby changing the total kinetic energy of the system.

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