Question: 1. Person A pushes a box horizontally with a force of 100 N and the box moves to the right 5 m. Is the work

1. Person A pushes a box horizontally with a force of 100 N and the box moves to the right 5 m. Is the work done by Person A positive, negative, or zero?

2. Person B pushes a box horizontally with a force of 100 N and the box does not move. Is the work done by Person B positive, negative, or zero?

3. Person C pushes a box to the left with a force of 100 N, but the box was already moving to the right and continues to move 10 m as Person C pushes right. Is the work done by Person C positive, negative, or zero?

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