To determine which change in force would stop the box from moving, we first need to know the current state of the forces acting on the box.
- If the box is moving to the right, there must be a net force acting to the right.
- To stop the box, you would need to apply a force that is equal and opposite to the force causing the motion.
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Adding 6 N of force pulling to the left: This would oppose the current force pulling to the right, potentially reducing the net force but not necessarily stopping the motion unless the total of forces to the left equals or exceeds the forces to the right.
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Adding 6 N of force pulling to the right: This would increase the force to the right and would likely cause the box to move to the right faster, not stop it.
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Subtracting 8 N of force pulling to the right: This would reduce the force already acting to the right, potentially stopping the box or slowing it down.
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Subtracting 8 N of force pulling to the left: This would decrease the opposing force acting to the left, which would likely result in an increased net force to the right, causing the box to move faster to the right.
If the box is currently moving to the right, the most effective way to stop it would be to either add a force pulling to the left that equals or exceeds the force currently moving it or subtract a force from the right that would bring it to a halt.
Assuming the box was being moved by a net force greater than 6 N to the right, the correct response would be:
- Subtracting 8 N of force pulling to the right
This option would reduce the force pulling the box to the right, potentially bringing the net force to zero, therefore stopping its motion.
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