Explain each sentence if it is true or false.  A. Linear momentum is conserved when there is a net force acting on the system.  B. An object can have a non-zero angular momentum even if it is at rest.  C. The angular momentum is not conserved if a non-zero net torque is acted on a rotating system

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.