Consider a system of multiple objects that all interact with each other. Which of the following statements are true? (There may be more than one.) Group of answer choicesIf the net external force on the system is zero, then the sum of all linear momentum vectors remains constant.If there are no external forces acting on the system, then the sum of all the linear momentum vectors remains constant.The objects may transfer linear momentum among each other.The objects cannot transfer linear momentum among each other.The linear momentum of each individual object must remain constant.The linear momentum of each individual object can change.
Question
Consider a system of multiple objects that all interact with each other. Which of the following statements are true? (There may be more than one.) Group of answer choicesIf the net external force on the system is zero, then the sum of all linear momentum vectors remains constant.If there are no external forces acting on the system, then the sum of all the linear momentum vectors remains constant.The objects may transfer linear momentum among each other.The objects cannot transfer linear momentum among each other.The linear momentum of each individual object must remain constant.The linear momentum of each individual object can change.
Solution
The following statements are true:
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If the net external force on the system is zero, then the sum of all linear momentum vectors remains constant. This is a direct application of Newton's First Law, which states that an object at rest or in uniform motion will continue to be so unless acted upon by an external force. In this case, if there is no external force, the total momentum (which is a vector sum of individual momenta) remains constant.
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If there are no external forces acting on the system, then the sum of all the linear momentum vectors remains constant. This is essentially the same as the first statement and is also true.
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The objects may transfer linear momentum among each other. This is true. In a system of multiple objects, they can exchange momentum through interactions (like collisions), but the total momentum of the system remains constant if no external forces are acting.
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The linear momentum of each individual object can change. This is true. While the total momentum of the system remains constant if no external forces are acting, the individual momenta of the objects can change due to interactions among the objects.
The statements "The objects cannot transfer linear momentum among each other" and "The linear momentum of each individual object must remain constant" are false.
Similar Questions
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