Question

The principle of conservation of linear momentum states that the linear momentum of a system.
(1.) Always remains conserved.
(2.) Can be changed only when internal forces are extremely high.
(3.) Can be changed by internal forces.
(4.) Can be changed even by the slightest unbalanced external force.

Answer 1

Explanation:

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hello (4th) is the ANSWER the principal linear momentum states that a object is remains in same direction and speed unless any external force applied.

So,the ANSWER is (4)