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1. Homework Statement
2. Homework Equations
The conservation of momentum states that if there are no external forces acting on a system, then momentum is conserved (i.e., the momentum before an event is equal to the momentum after an event). (Note: We assume that the internal forces follow Newton's third law (i.e., forces are third law pairs) and that the sum of the internal forces is equal to zero.)
3. The Attempt at a Solution
If we are trying to solve for the speed of the shell relative to the ground, then we should consider only the shell moving while the gun is stationary. Therefore, the speed of the shell relative to the ground, and thus the momentum of the shell relative to the ground, will include a factor of the momentum of the gun. This is the approach that I think makes most sense. However, I am stuck. Can someone provide insight?
2. Homework Equations
The conservation of momentum states that if there are no external forces acting on a system, then momentum is conserved (i.e., the momentum before an event is equal to the momentum after an event). (Note: We assume that the internal forces follow Newton's third law (i.e., forces are third law pairs) and that the sum of the internal forces is equal to zero.)
3. The Attempt at a Solution
If we are trying to solve for the speed of the shell relative to the ground, then we should consider only the shell moving while the gun is stationary. Therefore, the speed of the shell relative to the ground, and thus the momentum of the shell relative to the ground, will include a factor of the momentum of the gun. This is the approach that I think makes most sense. However, I am stuck. Can someone provide insight?
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