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Answer:
-7.5 kg m/s
Explanation:
Initial momentum (p1) = 4.5 kg m/s
final momentum (p2) = -3.5 kg m/s
We have to find out the change in momentum , As linear momentum is a vector quantity. So, we have to use the vector form to solve the momentum change . Means we have to take the sign of momentum also.
Change in momentum = Final momentum - initial momentum
So,
Change in momentum = p2 - p1
Insert values from question,
Change in momentum = -3.5 kg m/s - 4 kg m/s
So, change in momentum = -7.5 kg m/s
Weight (W), the normal force( N), and the tension force( T )in the string will all be forces operating on the box.
<h3>What is tension force?</h3>
The tension force is described as the force transferred through a rope, string, or wire as opposing forces pull it.
The tension force is applied along the whole length of the wire, pulling energy equally on both ends.
A horizontally pulling rope is dragging a box across the floor at a consistent speed. Friction is significant.
Hence, the force acting on the box will be weight W, Normal force N, and the tension force T, in the string.
To learn more about the tension force refer to the link;
brainly.com/question/2287912
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Conduction is your answer here