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Question

Person A stands on the right side of a cart, while Person B stands on the left side. The cart is initially at rest. Person A pushes on the cart with a force of 22.0N, and Person B pushes on the cart with a force of 33.0N.
The cart, with no other forces acting on it, starts to move and rolls through a distance of 2.0m while both people continue to push with their respective forces.
How much work was done on the cart by Person B?

A
44.0J
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B
+22.0J
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C
+44.0J
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D
+66.0J
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E
None of the above
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Solution

The correct option is D +66.0J
Force exerted by person B FB=33.0 N
Displacement of the box in the direction of FB S=2.0 m
Work done by person B WB=FB×S=33.0×2.0=+66.0 J

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