Which of the following statement is true? If the resultant force acting on a body of constant mass is zero the body's momentum is always zero. If the resultant force acting on a body of constant mass is zero, the body's momentum is constant. If the resultant force acting on a body of constant mass is zero, the body's momentum is decreasing. If the resultant force acting on a body of constant mass is zero the body's momentum is increasing. No answer

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