Question

in the principal of conservation of linear momentum the total external force is​

Answer 1

Step-by-step explanation:

$\huge\sf\purple{Answer-:}$The law of conservation of momentum says that the momentum of a closed system is constant in time (conserved). A closed (or isolated) system is defined to be one for which the mass remains constant, and the net external force is zero. The total momentum of a system is conserved only when the system is closed.

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